Description

ABOUT OUR ENGINEERING TEAM

Overview of our stack:

• Our API services are built with Elixir, Phoenix, and PostgreSQL following the JSON API specification.

• Our client application is written in React and TypeScript.

• The application is fully isomorphic, rendering application state/snapshots server-side where possible.

• Our services are designed for a serverless architecture that’s built with Terraform and runs in AWS.

On our engineering team, you’ll be involved in the entire product development process as an equal thought partner from ideation, to engineering investigation, to design, and through implementation. At Albert, deadlines and scope are driven by the engineering team, not by teams or managers detached from the technical challenges. We take time to pay off technical debt, test, and plan long-term architectural improvements alongside new features. Most importantly, you’ll see how rewarding it is to release features to tens of thousands of teachers who rely on Albert for their day-to-day instruction.

THE ROLE

As a Software Engineer, you will work with our cutting-edge Elixir/Phoenix-powered API to support feature development and push the boundaries of scalability, stability, and speed. You’ll also work with modern Javascript libraries to create beautiful, interactive, and responsive interfaces that help people accelerate their learning.

You’ll…

• be a major contributor to the team by writing modern, testable and maintainable code to support Albert’s roadmap;

• take ownership of features and engineering initiatives from end-to-end by going through design, implementation, test, and maintenance cycles;

• participate in, and lead architectural and design review discussions;

• collaborate with other engineers and the Product team to define project goals and establish milestones;

• identify opportunities to improve existing code or architecture; and

• embody our core values and uphold our unique company culture.

ABOUT THE COMPANY

Since 2014, Albert has been powering feedback loops for students and teachers to improve educational outcomes. We do this by providing students with engaging, thought-provoking questions and feedback and teachers with actionable data and flexible instructional tools. We believe we can make the biggest impact by working through teachers, equipping them with the highest quality practice and assessment content possible.

INCLUSION AT ALBERT

Albert is proud to be an equal opportunity workplace. We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. As we continue to grow, we do so with a focus on building teams representing the different cultures, backgrounds, ethnicities, and experiences of our users, students, and the world. We simultaneously strive to create spaces promoting personal growth, diversity, and inclusion.

LOCATION

We are a remote-first company. We are accepting applications from people who live and work in the following states:

• Arizona

• California

• Colorado

• Florida

• Georgia

• Illinois

• Louisiana

• Nevada

• New Jersey

• New York

• North Carolina

• Ohio

• Pennsylvania

• South Carolina

• Tennessee

• Texas

• Virginia

• Wisconsin

BENEFITS

• Competitive salary. We observe the same pay bands, regardless of where you live. For this role, our starting salary is $100,000 - $125,000, based on experience and qualifications. This represents the pay band directly under what we designate as “Senior Software Engineer”. Our hope is to promote the person we hire for this role after 12-24 months.

• Health, dental, and vision insurance. We offer a range of options, including the best BCBS PPO Platinum plan available. The company contributes 90% of the cost for our various medical insurance options and 90% for vision and dental.

• Flexible Spending Account and Dependent FSA. Set aside pre-tax dollars for eligible medical expenses and the costs of caring for dependents.

• One Medical. We cover enrollment in One Medical to provide all employees with convenient access to primary care.

• Paid parental leave. Parents are eligible for up to twelve (12) weeks of fully paid parental leave after a year of service.

• A 401k plan. Save for retirement with a fully managed plan and a 1% match.

• Commuter benefit. Use pre-tax earnings on your commute through our managed platform.

• Flexible, guilt-free vacation. Take guilt-free vacations with no hard limit. Just be reasonable and considerate of the company and your teammates.

• Half-Day Fridays: Enjoy a better work-life balance with half-day Fridays, working only 4 hours.

Requirements

We look for people who are passionate learners, work well in teams, and take pride in their work.

The following are helpful:

• Professional experience writing services in functional languages using modern frameworks and infrastructure. Experience with the following is a plus: Elixir, Phoenix, PostgreSQL, and Docker.

• Proficient in crafting UI components with HTML, CSS, and JavaScript (React)

• Bachelor’s degree in Computer Science or relevant professional experience working in a product-driven environment.

• Able to write well-documented, maintainable, and tested code.

• The ability to take a pragmatic approach to problem-solving and prioritization, always considering how to maximize value to users and the rest of your team.

• You’re comfortable working in an agile environment and used to working collaboratively, participating in code reviews, and being a great teammate.

• You can be a leader in driving your team and the broader engineering team toward identifying and executing the best solutions.

Work From Anywhere in LATAM and the Philippines

Work Schedule: 9:00 AM – 6:00 PM PST (EasternTime)

An AI-powered recruiting platform is building the database layer behind its operational systems, reporting, and AI features, and is looking for a Database Engineer to design clean schemas, write efficient SQL, and make Postgres do more with less.

The company runs a production Postgres backend powering its applicant tracking system, fed by webhook-driven ingestion from external hiring tools via serverless workers and queues. As it scales, it is investing in the database foundation that will support reporting and AI consumers, and the role pairs closely with the Engineering team (which owns ingestion) and AI Engineering (which consumes datasets).

Day-to-day, the Database Engineer extends and evolves the Postgres schema across recruiting, candidates, and business operations, builds SQL views and derived tables that serve as the standard interface for reporting and AI, and optimizes query performance through indexing, partitioning, and execution-plan analysis. Success in the first 3–6 months means a completed schema audit with top-priority fixes shipped, measurable p95 gains on key dashboard queries, and column-level PII classification aligned to retention policy.

Must-Have

• 3+ years working with production PostgreSQL databases
• Advanced SQL: window functions, CTEs, JSONB, EXPLAIN analysis, and query rewriting for performance
• Relational data modeling for both OLTP and analytical use cases, including materialized views, indexing, and partitioning on OLTP Postgres
• Defining and enforcing PII, data-classification, and retention policies at the database level
• Git-based schema-migration workflows (Flyway, sqitch, or comparable) with PR review
• Basic Python or comparable scripting for one-off data operations and validation
• B2+ English (CEFR) for technical documentation read across teams

Nice-to-Have

• Experience with Supabase (RLS, auth model, Realtime, Storage)
• Experience with dbt or SQLMesh for versioning SQL transformations
• Prior work exposing datasets to AI/ML consumers (feature datasets, embedding indexes, eval sets)

About Pearl Talent

Pearl works with the top 1% of candidates from around the world and connects them with the best startups in the US and EU. Our clients have raised over $5B in aggregate and are backed by companies like OpenAI, a16z, and Founders Fund. They’re looking for the sharpest, hungriest candidates who they can consistently promote and work with over many years. Candidates we’ve hired have been flown out to the US and EU to work with their clients, and even promoted to roles that match folks onshore in the US.

Hear why we exist, what we believe in, and who we’re building for:

Watch here: https://www.loom.com/share/863b8e426e6d48309aa8f4ea4c1c94cd

• Competitive Salary: Based on experience and skills

• Remote Work: Fully remote—work from anywhere

• Generous PTO: In accordance with company policy

• Health Coverage for PH-based talents: HMO coverage after 3 months for full-time employees

• Direct Mentorship: Guidance from international industry experts

• Learning & Development: Ongoing access to resources for professional growth

• Global Networking: Connect with professionals worldwide

Our Recruitment Process

1. Application
2. Screening
3. Skills Assessment
4. Topgrading Interview
5. Client Interview
6. Job Offer
7. Client Onboarding

Ready to Join Us?

If you’re empathetic, organized, and passionate about improving patient experiences through operational excellence, this role is for you. Apply now to help make specialized healthcare more accessible to patients across the U.S.

Who we’re looking for

Have you ever found yourself feverishly working with an Engineering team to solve a complex problem–and found that after what had felt like an hour had only been 10 minutes?  If so, we’re looking for hardworking and passionate engineers like yourself to join our Backend team at Fieldwire!  You will be one of the engineers behind our backend–focusing with your team on your common interest in distributed backend systems, their scalability (we’re growing!), as well as their continued development.  Your work building our core platform features and services will directly impact all of our nearly million end users and 4,000 companies who rely on Fieldwire for their Construction Management needs.  If you have strong experience in keeping apps secure, scalable, and performant–then click the Apply Now button today to speak with one of our amazing recruiting coordinators!

What you’ll be doing

The primary responsibilities of our next Mid-Level Backend Engineer will be to:

• Build and maintain our production services at scale
• Develop new features to support internal & external customers
• Debug production issues across services and multiple levels of the stack
• Develop seamless integrations between Fieldwire and external services and partners to delight our customers
• Improve engineering standards, tooling, and processes
• Releasing a rapidly growing API while ensuring 100% backward compatibility
• Building services with efficient auto-scaling to handle both peak and non-peak loads
• Participate in on-call rotation

At Fieldwire, we’re looking for our next Mid-Level Backend Engineer to have the following skills and experiences:

• Bachelor’s or Master’s degree in Computer Science or equivalent work experience
• 3+ years experience in a Backend role
• Experience with modern web application development and relational databases
• Known for writing the cleanest, most well-tested, and modular code on the block
• Understanding of algorithms and data structures

And if you have any of the following, we REALLY want you to apply today!

• Experience with Ruby on Rails or Rust
• Have previously worked on high-traffic web applications and services
• Working knowledge of Docker and containerization
• Experience with AWS

Compensation:

The estimated pay ranges for this role are as follows: $145,000.00 - $170,000.00

The salary range represents the low and high end of the salary range for this job in the US. Minimums and maximums may vary based on location. The actual salary offer will carefully consider a wide range of factors such as your skills, qualifications and experience. In addition to the salary you may be eligible for a corporate bonus which can range up to 30%.

Why Fieldwire?

The field-first construction platform for less busywork and more building. Trusted on 4M+ projects worldwide, Fieldwire by Hilti gives crews reliable access to plans, tasks, and updates on one simple platform. It unites the field and office around a single, transparent source of truth, keeping teams aligned from start to finish. Designed for easy adoption, crews gain real-time visibility into progress, clear ownership of work, and the context to make confident decisions. As part of the Hilti Group, Fieldwire combines deep construction expertise with modern digital innovation to deliver better outcomes on every job. Learn more at Fieldwire.com.

Where is the job located?

This role is fully remote within the United States. Our headquarters are based in beautiful San Francisco and our office is centrally located right off of Embarcadero Bart station.

–

Fieldwire is proud to be an Equal Opportunity Employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status or any other characteristic protected by law.

The financial industry is growing at a record pace, but our data providers are still stuck in the past — with cumbersome onboarding processes, complicated APIs, slow infrastructure, and expensive licensing costs.

Databento is the market data platform for modern finance. The company provides real-time and historical data across futures, options, and equities through a unified API. By owning the entire market data stack end-to-end, Databento is the first platform of its kind to combine the performance and reliability demanded by the world’s leading trading firms with a dramatically simpler developer experience. Our team includes alumni of Two Sigma, Citadel Securities, Flow Traders, Tower Research, PDT Partners, SIG, and other top quantitative firms.

We’re looking for a midlevel or senior IC to join our core engineering team. You’ll be responsible for implementing and maintaining our Java client library, and also working alongside our core engineering team on the most performance-sensitive parts of our codebase.

Responsibilities

• Own and maintain our Java client library, ensuring it is robust, well-tested, and easy for external users to integrate with.
• Design, develop, and maintain high-performance server applications in C/C++.
• Write message parsers and feed handlers for direct market data feeds from trading venues.
• Optimize existing codebase for high throughput (millions of messages per second, up to 40+ gigabits) and low latency (measured in nanoseconds).
• Implement tools and libraries for petabyte-scale data processing and analysis.
• Collaborate with the systems team to implement best practices for build, deployment, CI/CD.
• Implement monitoring and improve application uptime.
• Ensure smooth feature rollouts and updates.

Preferred background

• 5+ years of full-time software engineering experience, preferably at a trading firm, tech company, or high-growth startup.
• Strong proficiency in both C/C++ and Java.
• Experience with C# is a plus.
• Experience designing APIs with a strong focus on intuitive, developer-friendly interfaces.
• Familiarity with open source best practices, including release management, versioning, changelogs, issue triage, and backwards compatibility.
• Knowledge of systems programming, algorithms, data structures, multithreading, networked I/O, serialization, CPU architecture, kernel, and compilers.
• Experience working with multiprocess environments.
• Comfortable with lldb/gdb.
• Good communication skills and work ethic for a remote workplace.
• An interest in low-level optimization and performance engineering.
• An interest in financial data or algorithmic trading.

Notice about phishing scams

Be cautious of phishing scams impersonating Databento that offer fake job interviews and request purchases. Official emails come only from @databento.com or us.greenhouse-mail.io (our ATS). Any other domains (e.g., databento-careers.com, databento.online) are fraudulent.

–

Databento, Inc. provides equal employment opportunities to all employees and applicants without regard to race, color, religion, sex, national origin, age, disability, sexual orientation, gender identity or expression, veteran status, or genetics. In addition to federal law requirements, we comply with applicable state and local laws governing nondiscrimination in every location where we operate. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training. Pursuant to applicable laws, we consider qualified applicants with arrest or conviction records. If you need an accommodation, please let us know.

Our recruiting data suggests that underrepresented applicants often downplay their skills. Even if your experience doesn’t exactly match the qualifications listed, we still want to hear from you. Please apply!

The financial industry is growing at a record pace, but our data providers are still stuck in the past — with cumbersome onboarding processes, complicated APIs, slow infrastructure, and expensive licensing costs.

Databento is the market data platform for modern finance. The company provides real-time and historical data across futures, options, and equities through a unified API. By owning the entire market data stack end-to-end, Databento is the first platform of its kind to combine the performance and reliability demanded by the world’s leading trading firms with a dramatically simpler developer experience. Our team includes alumni of Two Sigma, Citadel Securities, Flow Traders, Tower Research, PDT Partners, SIG, and other top quantitative firms.

We’re looking for a midlevel or senior IC to join our core engineering team. You’ll be responsible for implementing and maintaining our C# client library, and also working alongside our core engineering team on the most performance-sensitive parts of our codebase.

Responsibilities

• Own and maintain our C# client library, ensuring it is robust, well-tested, and easy for external users to integrate with.
• Design, develop, and maintain high-performance server applications in C++.
• Write message parsers and feed handlers for direct market data feeds from trading venues.
• Optimize existing codebase for high throughput (millions of messages per second, up to 40+ gigabits) and low latency (measured in nanoseconds).
• Implement tools and libraries for petabyte-scale data processing and analysis.
• Collaborate with the systems team to implement best practices for build, deployment, CI/CD.
• Implement monitoring and improve application uptime.
• Ensure smooth feature rollouts and updates.

Preferred background

• 5+ years of full-time software engineering experience, preferably at a trading firm, tech company, or high-growth startup.
• Strong proficiency in both C++ and C#.
• Experience with Java is a plus.
• Experience designing APIs with a strong focus on intuitive, developer-friendly interfaces.
• Familiarity with open source best practices, including release management, versioning, changelogs, issue triage, and backwards compatibility.
• Knowledge of systems programming, algorithms, data structures, multithreading, networked I/O, serialization, CPU architecture, kernel, and compilers.
• Experience working with multiprocess environments.
• Comfortable with lldb/gdb.
• Good communication skills and work ethic for a remote workplace.
• An interest in low-level optimization and performance engineering.
• An interest in financial data or algorithmic trading.

Notice about phishing scams

Be cautious of phishing scams impersonating Databento that offer fake job interviews and request purchases. Official emails come only from @databento.com or us.greenhouse-mail.io (our ATS). Any other domains (e.g., databento-careers.com, databento.online) are fraudulent.

–

Databento, Inc. provides equal employment opportunities to all employees and applicants without regard to race, color, religion, sex, national origin, age, disability, sexual orientation, gender identity or expression, veteran status, or genetics. In addition to federal law requirements, we comply with applicable state and local laws governing nondiscrimination in every location where we operate. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training. Pursuant to applicable laws, we consider qualified applicants with arrest or conviction records. If you need an accommodation, please let us know.

Our recruiting data suggests that underrepresented applicants often downplay their skills. Even if your experience doesn’t exactly match the qualifications listed, we still want to hear from you. Please apply!

TSC is seeking a Flight Controls & GNC Engineer (Remote) to serve as a key contributor for Flight Controls Systems in our Airborne ISR Division.

Iterable is the leading AI-powered customer engagement platform that helps leading brands like Redfin, SeatGeek, Priceline, Calm, and Box create dynamic, individualized experiences at scale.

GPU Systems Engineer - Remote Bright Vision Technologies is a technology consulting and software development company delivering cloud, AI, data, and enterprise solutions across the United States.

Systems Reliability Engineer – Remote Bright Vision Technologies is a technology consulting and software development company delivering cloud, AI, data, and enterprise solutions across the United States.

About PostHog

Product development used to mean manually writing code, running analysis, diagnosing bugs, and rolling out changes using dozens of tools.

PostHog is the only platform that acts like a co-pilot for you (and your AI agents) to do it all – autonomously.

We started with open-source product analytics, launched out of Y Combinator’s W20 cohort. We’ve since shipped more than a dozen products, including:

• PostHog Code, the only AI devtool that understands your product, not just your codebase.

• A built-in data warehouse, so users can query product and customer data together using custom SQL insights.

• PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries.

We are:

1. Product-led. More than 450,000 organizations have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.

2. Default alive. Revenue is growing incredibly quickly, and we’re very efficient. We raise money to push ambition and grow faster, not to keep the lights on.

3. Well-funded. We’ve raised more than $180m from some of the world’s top investors. We’re set up for a long, ambitious journey.

We’re focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.

Things we care about

• Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions.

• Autonomy: We don’t tell anyone what to do. Everyone chooses what to work on next based on what’s going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed.

• Shipping fast: Why not now? We want to build a lot of products; we can’t do that shipping at a normal pace. We’ve built the company around small teams – autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end.

• Time for building: Nothing gets shipped in a meeting. We’re a natively remote company. We default to async communication – PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you’ve ever had.

• Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We’re optimistic about what’s possible and our ability to get there.

• Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it’s fun.

Who we’re looking for

We’re looking for people (US - Central/Eastern Timezone) that like deep ownership of production systems, people that are not afraid of working with stateful infrastructure and love working in AWS, VMs, automation, and making messy systems reliable.

In general we seek SRE’s who are:

• Enthusiastic drivers. We need proactive people that can fully own projects and get them done, and know to get help when needed. “Are we there yet?” is the wrong question.

• Optimistic problem solvers. Things get hard here sometimes, whether it’s scaling, shipping complex products, handling a stream of support requests, or trying to ship something that touches multiple teams. We need people who won’t get disheartened, and will collaborate, iterate, and ship their way out of anything.

• Grown ups. We’re an international bunch of weirdos, but one thing unites us: everyone is kind, considerate, and professional towards each other. This isn’t about age or experience, it’s about being low-ego, flexible, and respectful.

• Genuine builders. PostHog is full of people who just love building stuff, people who would still be building software even if there wasn’t a paycheck at the end. If this sounds like you, we should talk.

What you’ll be doing

You won’t be in a typical “keep the lights on” SRE role. The work is about turning a fast-growing, stateful system into a predictable, well-automated platform. (provisioning, scaling, rebalancing, recovery)

That means reducing operational stress, designing safe automation for traffic-heavy workloads, and building the tooling and patterns that let the system scale without scaling human effort.

You’ll work on the kind of problems that only show up at large scale (petabytes of data, thousands of cores, constant ingestion) across a multi-region, multi-account AWS platform running many services on Kubernetes.

• Operating EKS clusters across several environments with Karpenter autoscaling, Cilium networking, and ArgoCD-driven GitOps deployments

• Managing and evolving a multi AWS account organization, provisioning, networking, access control, and cross-account connectivity

• Maintaining the Terraform/Terragrunt IaC platform - modules, automated plan-on-PR / apply-on-merge pipelines, and safe patterns for shared infrastructure

• Improving operational tooling around deploys, schema changes, backups, restores, and incident response

• Reducing operational load by identifying repeat pain points and eliminating them through code and self-healing automation

• Optimizing cloud spend as you go

• Participating in on-call and incident response, with a strong focus on making incidents rarer over time

You’ll have room to design and automate, not just respond to alerts. You should join this team if you like deep ownership of production systems and enjoy building the platform layer that everything else runs on.

Requirements

• Deep hands-on experience with Kubernetes in production (EKS preferred). You’ve debugged node pressure, networking issues, and deployment failures at scale (thousands of nodes)

• Strong experience operating production infrastructure on AWS. Not just one account, but understanding organizational boundaries, IAM, and networking between many

• Experience automating infrastructure using Terraform or Terragrunt at scale, including module design and state management

• Solid understanding of Linux systems (disk, memory, networking, failure modes)

• Experience supporting stateful systems (databases, queues, storage systems, etc.)

• Ability to debug and reason about performance and reliability issues in production

• You’re comfortable owning systems end-to-end, including on-call responsibilities

You don’t need to be an expert in every system we run on day one. But you do need to enjoy owning complex infrastructure and learning how the pieces fit together.

Nice to have

• Experience with GitOps workflows (ArgoCD) and CI/CD pipelines (GitHub Actions)

• Experience with building AI agent-enabled base-level infra services for teams that move fast

• Familiarity with multi-region infrastructure and the consistency/availability tradeoffs that come with it

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know.

#LI-DNI

About PostHog

Product development used to mean manually writing code, running analysis, diagnosing bugs, and rolling out changes using dozens of tools.

PostHog is the only platform that acts like a co-pilot for you (and your AI agents) to do it all – autonomously.

We started with open-source product analytics, launched out of Y Combinator’s W20 cohort. We’ve since shipped more than a dozen products, including:

• PostHog Code, the only AI devtool that understands your product, not just your codebase.

• A built-in data warehouse, so users can query product and customer data together using custom SQL insights.

• PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries.

We are:

1. Product-led. More than 450,000 organizations have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.

2. Default alive. Revenue is growing incredibly quickly, and we’re very efficient. We raise money to push ambition and grow faster, not to keep the lights on.

3. Well-funded. We’ve raised more than $180m from some of the world’s top investors. We’re set up for a long, ambitious journey.

We’re focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.

Things we care about

• Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions.

• Autonomy: We don’t tell anyone what to do. Everyone chooses what to work on next based on what’s going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed.

• Shipping fast: Why not now? We want to build a lot of products; we can’t do that shipping at a normal pace. We’ve built the company around small teams – autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end.

• Time for building: Nothing gets shipped in a meeting. We’re a natively remote company. We default to async communication – PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you’ve ever had.

• Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We’re optimistic about what’s possible and our ability to get there.

• Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it’s fun.

Who we’re looking for

We’re looking for people (EU/UK based) that like deep ownership of production systems, people that are not afraid of working with stateful infrastructure and love working in AWS, VMs, automation, and making messy systems reliable.

In general we seek SRE’s who are:

• Enthusiastic drivers. We need proactive people that can fully own projects and get them done, and know to get help when needed. “Are we there yet?” is the wrong question.

• Optimistic problem solvers. Things get hard here sometimes, whether it’s scaling, shipping complex products, handling a stream of support requests, or trying to ship something that touches multiple teams. We need people who won’t get disheartened, and will collaborate, iterate, and ship their way out of anything.

• Grown ups. We’re an international bunch of weirdos, but one thing unites us: everyone is kind, considerate, and professional towards each other. This isn’t about age or experience, it’s about being low-ego, flexible, and respectful.

• Genuine builders. PostHog is full of people who just love building stuff, people who would still be building software even if there wasn’t a paycheck at the end. If this sounds like you, we should talk.

What you’ll be doing

We run one of the largest self-managed ClickHouse installations on AWS, at petabyte scale, and we’re actively preparing it for the next 10–50× of growth. This role sits at the centre of that effort.

You won’t be in a typical “keep the lights on” SRE role. The work is about turning a fast-growing, stateful system into a predictable, well-automated platform. (provisioning, scaling, rebalancing, recovery)

That means reducing operational stress, designing safe automation for data-heavy workloads, and building the tooling and patterns that let the system scale without scaling human effort.

You’ll work on the kind of problems that only show up at large scale (petabytes of data, thousands of cores, constant ingestion).

• Managing large fleets of EC2-based VMs, disks, and networking for data-intensive workloads

• Improving operational tooling around deploys, schema changes, backups, restores, and incident response

• Working closely with ClickHouse engineers to turn database-level needs into infra-level solutions

• Reducing operational load by identifying repeat pain points and eliminating them through code and self-healing automation

• Participating in on-call and incident response, with a strong focus on making incidents rarer over time

• You’ll have room to design and automate, not just respond to alerts.

You should join this team if you like deep ownership of production systems, and are not afraid of working with stateful infrastructure

Requirements

• Prior experience with ClickHouse or other OLAP databases

• Strong experience operating production infrastructure on AWS

• Hands-on experience with VM-based systems (EC2), not just managed PaaS

• Experience automating infrastructure using tools like Terraform, Ansible, or similar

• Solid understanding of Linux systems (disk, memory, networking, failure modes)

• Experience supporting stateful systems (databases, queues, storage systems, etc.)

• Ability to debug and reason about performance and reliability issues in production

• You’re comfortable owning systems end-to-end, including on-call responsibilities

You don’t need to be a ClickHouse expert on day one. We’ll teach you the database internals, but you do need to enjoy owning complex infrastructure.

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know.

#LI-DNI

The Role

Istari’s software doesn’t just get handed off, it gets deployed into some of the most complex engineering environments in aerospace and defense.  As a Forward Deployed Engineer, you’ll be embedded directly inside our customer organizations, operating as part of their team while remaining tightly connected to Istari’s product and engineering core.

This is not a support role.  You are a builder.  You’ll write real code, architect integrations, and solve hard problems that emerge at the intersection of digital engineering workflows and mission-critical operations.  The challenges you’ll tackle require the instincts of a strong software engineer and the adaptability of someone who thrives in unstructured environments.  Challenges like connecting CAD, CFD, FEM pipelines to Istari’s platform; unlocking cross-discipline and cross-clearance collaboration; enabling organizations to actually use the tools in which they’ve invested.

You’ll work alongside Istari Program Managers who are embedded in the same customer environments.  They carry the program context and stakeholder relationships while you own the technical execution.  Together, you operate as a unit capable of handling almost anything a customer throws at you.  The best Forward Deployed Engineers make our product smarter, not just our customers happier.

Core Responsibilities:

Onsite Technical Delivery

• Embed with customer engineering teams to understand their workflows, data environments, and technical constraints

• Architect and build software solutions that integrate Istari’s platform into existing digital engineering ecosystems (CAD, CFD, FEM, simulation pipelines, and related toolchains)

• Serve as the primary technical interface for the customer – not just answering questions, but proactively identifying where our software can drive more value

Software Development

• Develop, test, and maintain integrations and workflow solutions following modern software engineering practices

• Write clean, maintainable code that can be productized or reused across customer deployments

• Contribute to internal tooling and documentation that scales your knowledge across the team

Feedback Loop to Product

• Translate field experience into actionable product insights — you are one of Istari’s clearest signals on what customers actually need

• Participate in internal engineering reviews, architecture discussions, and roadmap planning

• Help develop proposals and technical approaches for new customer opportunities

Required Qualifications:

Required

• Strong software engineering fundamentals — you write production-quality code and can defend your architectural decisions

• Hands-on experience with digital engineering toolchains: CAD, CFD, FEM, or related simulation and modeling environments

• Comfort operating in ambiguous, fast-moving environments without a lot of hand-holding

• Ability to work on-site with customers in a U.S. defense or aerospace context (clearance eligibility required; active clearance a strong plus)

• U.S. citizenship required

Preferred

• Experience integrating engineering software into larger data or workflow platforms

• Background in aerospace, defense, or other systems-engineering-heavy industries

• Exposure to Model-Based Systems Engineering (MBSE) or digital thread / digital twin concepts

• Exposure to or direct experience with advanced CAD, CFD, or FEM tools

Why This Role?

The engineers who do this job well become some of the most technically well-rounded people in the industry. You’ll see how large, complex organizations actually work – not just the happy path. You’ll build things that get used immediately. And because you’re reporting into Istari’s Customer Success org (not a sales or account team), your career trajectory stays technical.  You’ll also have the Istari team behind you: regular syncs, access to internal engineering resources, and a clear path to influence the product you’re deploying.

About Istari Digital

Istari is a digital engineering software company building open, scalable infrastructure for engineering data. Our platform lets customers simply and securely integrate engineering models across disciplines, organizations, and security levels – whether they’re designing prototypes, performing virtual testing, or training AI and autonomy for complex systems.

Focus is rewarded.  Finish is remembered.

Facts are friendly.  Even when they are not fun.

Fellowship is fundamental.  Make others successful.

$143,000 - $165,000 a year

The anticipated compensation range for this position may vary based on experience, skills, qualifications, location, and business needs. In addition to base salary, this role may be eligible for bonuses, equity, and a comprehensive benefits package.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

About PostHog

Product development used to mean manually writing code, running analysis, diagnosing bugs, and rolling out changes using dozens of tools.

PostHog is the only platform that acts like a co-pilot for you (and your AI agents) to do it all – autonomously.

We started with open-source product analytics, launched out of Y Combinator’s W20 cohort. We’ve since shipped more than a dozen products, including:

• PostHog Code, the only AI devtool that understands your product, not just your codebase.

• A built-in data warehouse, so users can query product and customer data together using custom SQL insights.

• PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries.

We are:

1. Product-led. More than 450,000 organizations have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.

2. Default alive. Revenue is growing incredibly quickly, and we’re very efficient. We raise money to push ambition and grow faster, not to keep the lights on.

3. Well-funded. We’ve raised more than $180m from some of the world’s top investors. We’re set up for a long, ambitious journey.

We’re focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.

Things we care about

• Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions.

• Autonomy: We don’t tell anyone what to do. Everyone chooses what to work on next based on what’s going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed.

• Shipping fast: Why not now? We want to build a lot of products; we can’t do that shipping at a normal pace. We’ve built the company around small teams – autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end.

• Time for building: Nothing gets shipped in a meeting. We’re a natively remote company. We default to async communication – PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you’ve ever had.

• Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We’re optimistic about what’s possible and our ability to get there.

• Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it’s fun.

Who we’re looking for

We’re looking for people (US - Central/Eastern Timezone) that like deep ownership of production systems, people that are not afraid of working with stateful infrastructure and love working in AWS, VMs, automation, and making messy systems reliable.

In general we seek SRE’s who are:

• Enthusiastic drivers. We need proactive people that can fully own projects and get them done, and know to get help when needed. “Are we there yet?” is the wrong question.

• Optimistic problem solvers. Things get hard here sometimes, whether it’s scaling, shipping complex products, handling a stream of support requests, or trying to ship something that touches multiple teams. We need people who won’t get disheartened, and will collaborate, iterate, and ship their way out of anything.

• Grown ups. We’re an international bunch of weirdos, but one thing unites us: everyone is kind, considerate, and professional towards each other. This isn’t about age or experience, it’s about being low-ego, flexible, and respectful.

• Genuine builders. PostHog is full of people who just love building stuff, people who would still be building software even if there wasn’t a paycheck at the end. If this sounds like you, we should talk.

What you’ll be doing

You won’t be in a typical “keep the lights on” SRE role. The work is about turning a fast-growing, stateful system into a predictable, well-automated platform. (provisioning, scaling, rebalancing, recovery)

That means reducing operational stress, designing safe automation for traffic-heavy workloads, and building the tooling and patterns that let the system scale without scaling human effort.

You’ll work on the kind of problems that only show up at large scale (petabytes of data, thousands of cores, constant ingestion) across a multi-region, multi-account AWS platform running many services on Kubernetes.

• Operating EKS clusters across several environments with Karpenter autoscaling, Cilium networking, and ArgoCD-driven GitOps deployments

• Managing and evolving a multi AWS account organization, provisioning, networking, access control, and cross-account connectivity

• Maintaining the Terraform/Terragrunt IaC platform - modules, automated plan-on-PR / apply-on-merge pipelines, and safe patterns for shared infrastructure

• Improving operational tooling around deploys, schema changes, backups, restores, and incident response

• Reducing operational load by identifying repeat pain points and eliminating them through code and self-healing automation

• Optimizing cloud spend as you go

• Participating in on-call and incident response, with a strong focus on making incidents rarer over time

You’ll have room to design and automate, not just respond to alerts. You should join this team if you like deep ownership of production systems and enjoy building the platform layer that everything else runs on.

Requirements

• Deep hands-on experience with Kubernetes in production (EKS preferred). You’ve debugged node pressure, networking issues, and deployment failures at scale (thousands of nodes)

• Strong experience operating production infrastructure on AWS. Not just one account, but understanding organizational boundaries, IAM, and networking between many

• Experience automating infrastructure using Terraform or Terragrunt at scale, including module design and state management

• Solid understanding of Linux systems (disk, memory, networking, failure modes)

• Experience supporting stateful systems (databases, queues, storage systems, etc.)

• Ability to debug and reason about performance and reliability issues in production

• You’re comfortable owning systems end-to-end, including on-call responsibilities

You don’t need to be an expert in every system we run on day one. But you do need to enjoy owning complex infrastructure and learning how the pieces fit together.

Nice to have

• Experience with GitOps workflows (ArgoCD) and CI/CD pipelines (GitHub Actions)

• Experience with building AI agent-enabled base-level infra services for teams that move fast

• Familiarity with multi-region infrastructure and the consistency/availability tradeoffs that come with it

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know.

#LI-DNI

About PostHog

Product development used to mean manually writing code, running analysis, diagnosing bugs, and rolling out changes using dozens of tools.

PostHog is the only platform that acts like a co-pilot for you (and your AI agents) to do it all – autonomously.

We started with open-source product analytics, launched out of Y Combinator’s W20 cohort. We’ve since shipped more than a dozen products, including:

• PostHog Code, the only AI devtool that understands your product, not just your codebase.

• A built-in data warehouse, so users can query product and customer data together using custom SQL insights.

• PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries.

We are:

1. Product-led. More than 450,000 organizations have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.

2. Default alive. Revenue is growing incredibly quickly, and we’re very efficient. We raise money to push ambition and grow faster, not to keep the lights on.

3. Well-funded. We’ve raised more than $180m from some of the world’s top investors. We’re set up for a long, ambitious journey.

We’re focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.

Things we care about

• Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions.

• Autonomy: We don’t tell anyone what to do. Everyone chooses what to work on next based on what’s going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed.

• Shipping fast: Why not now? We want to build a lot of products; we can’t do that shipping at a normal pace. We’ve built the company around small teams – autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end.

• Time for building: Nothing gets shipped in a meeting. We’re a natively remote company. We default to async communication – PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you’ve ever had.

• Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We’re optimistic about what’s possible and our ability to get there.

• Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it’s fun.

Who we’re looking for

We’re looking for people (EU/UK based) that like deep ownership of production systems, people that are not afraid of working with stateful infrastructure and love working in AWS, VMs, automation, and making messy systems reliable.

In general we seek SRE’s who are:

• Enthusiastic drivers. We need proactive people that can fully own projects and get them done, and know to get help when needed. “Are we there yet?” is the wrong question.

• Optimistic problem solvers. Things get hard here sometimes, whether it’s scaling, shipping complex products, handling a stream of support requests, or trying to ship something that touches multiple teams. We need people who won’t get disheartened, and will collaborate, iterate, and ship their way out of anything.

• Grown ups. We’re an international bunch of weirdos, but one thing unites us: everyone is kind, considerate, and professional towards each other. This isn’t about age or experience, it’s about being low-ego, flexible, and respectful.

• Genuine builders. PostHog is full of people who just love building stuff, people who would still be building software even if there wasn’t a paycheck at the end. If this sounds like you, we should talk.

What you’ll be doing

We run one of the largest self-managed ClickHouse installations on AWS, at petabyte scale, and we’re actively preparing it for the next 10–50× of growth. This role sits at the centre of that effort.

You won’t be in a typical “keep the lights on” SRE role. The work is about turning a fast-growing, stateful system into a predictable, well-automated platform. (provisioning, scaling, rebalancing, recovery)

That means reducing operational stress, designing safe automation for data-heavy workloads, and building the tooling and patterns that let the system scale without scaling human effort.

You’ll work on the kind of problems that only show up at large scale (petabytes of data, thousands of cores, constant ingestion).

• Managing large fleets of EC2-based VMs, disks, and networking for data-intensive workloads

• Improving operational tooling around deploys, schema changes, backups, restores, and incident response

• Working closely with ClickHouse engineers to turn database-level needs into infra-level solutions

• Reducing operational load by identifying repeat pain points and eliminating them through code and self-healing automation

• Participating in on-call and incident response, with a strong focus on making incidents rarer over time

• You’ll have room to design and automate, not just respond to alerts.

You should join this team if you like deep ownership of production systems, and are not afraid of working with stateful infrastructure

Requirements

• Prior experience with ClickHouse or other OLAP databases

• Strong experience operating production infrastructure on AWS

• Hands-on experience with VM-based systems (EC2), not just managed PaaS

• Experience automating infrastructure using tools like Terraform, Ansible, or similar

• Solid understanding of Linux systems (disk, memory, networking, failure modes)

• Experience supporting stateful systems (databases, queues, storage systems, etc.)

• Ability to debug and reason about performance and reliability issues in production

• You’re comfortable owning systems end-to-end, including on-call responsibilities

You don’t need to be a ClickHouse expert on day one. We’ll teach you the database internals, but you do need to enjoy owning complex infrastructure.

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know.

#LI-DNI

The Role

Istari’s software doesn’t just get handed off, it gets deployed into some of the most complex engineering environments in aerospace and defense.  As a Forward Deployed Engineer, you’ll be embedded directly inside our customer organizations, operating as part of their team while remaining tightly connected to Istari’s product and engineering core.

This is not a support role.  You are a builder.  You’ll write real code, architect integrations, and solve hard problems that emerge at the intersection of digital engineering workflows and mission-critical operations.  The challenges you’ll tackle require the instincts of a strong software engineer and the adaptability of someone who thrives in unstructured environments.  Challenges like connecting CAD, CFD, FEM pipelines to Istari’s platform; unlocking cross-discipline and cross-clearance collaboration; enabling organizations to actually use the tools in which they’ve invested.

You’ll work alongside Istari Program Managers who are embedded in the same customer environments.  They carry the program context and stakeholder relationships while you own the technical execution.  Together, you operate as a unit capable of handling almost anything a customer throws at you.  The best Forward Deployed Engineers make our product smarter, not just our customers happier.

Core Responsibilities:

Onsite Technical Delivery

• Embed with customer engineering teams to understand their workflows, data environments, and technical constraints

• Architect and build software solutions that integrate Istari’s platform into existing digital engineering ecosystems (CAD, CFD, FEM, simulation pipelines, and related toolchains)

• Serve as the primary technical interface for the customer – not just answering questions, but proactively identifying where our software can drive more value

Software Development

• Develop, test, and maintain integrations and workflow solutions following modern software engineering practices

• Write clean, maintainable code that can be productized or reused across customer deployments

• Contribute to internal tooling and documentation that scales your knowledge across the team

Feedback Loop to Product

• Translate field experience into actionable product insights — you are one of Istari’s clearest signals on what customers actually need

• Participate in internal engineering reviews, architecture discussions, and roadmap planning

• Help develop proposals and technical approaches for new customer opportunities

Required Qualifications:

Required

• Strong software engineering fundamentals — you write production-quality code and can defend your architectural decisions

• Hands-on experience with digital engineering toolchains: CAD, CFD, FEM, or related simulation and modeling environments

• Comfort operating in ambiguous, fast-moving environments without a lot of hand-holding

• Ability to work on-site with customers in a U.S. defense or aerospace context (clearance eligibility required; active clearance a strong plus)

• U.S. citizenship required

Preferred

• Experience integrating engineering software into larger data or workflow platforms

• Background in aerospace, defense, or other systems-engineering-heavy industries

• Exposure to Model-Based Systems Engineering (MBSE) or digital thread / digital twin concepts

• Exposure to or direct experience with advanced CAD, CFD, or FEM tools

Why This Role?

The engineers who do this job well become some of the most technically well-rounded people in the industry. You’ll see how large, complex organizations actually work – not just the happy path. You’ll build things that get used immediately. And because you’re reporting into Istari’s Customer Success org (not a sales or account team), your career trajectory stays technical.  You’ll also have the Istari team behind you: regular syncs, access to internal engineering resources, and a clear path to influence the product you’re deploying.

About Istari Digital

Istari is a digital engineering software company building open, scalable infrastructure for engineering data. Our platform lets customers simply and securely integrate engineering models across disciplines, organizations, and security levels – whether they’re designing prototypes, performing virtual testing, or training AI and autonomy for complex systems.

Focus is rewarded.  Finish is remembered.

Facts are friendly.  Even when they are not fun.

Fellowship is fundamental.  Make others successful.

$143,000 - $165,000 a year

The anticipated compensation range for this position may vary based on experience, skills, qualifications, location, and business needs. In addition to base salary, this role may be eligible for bonuses, equity, and a comprehensive benefits package.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Thanks for your interest in Oklo!  We are searching for aShielding Analysis Engineerto join our engineering team.

Position Description

The Shielding Analysis Engineer is responsible for defining, developing, and executing radiation shielding and radiation transport analyses to support reactor design, plant layout, performance evaluation, and safety assurance.

This role involves working closely with the broader design team to solicit and capture requirements, establish the scope of shielding evaluations, and implement appropriate source term, activation, dose rate, streaming, and shielding models and methods.

Areas of analysis include, but are not limited to, radiation transport, material activation, source term development, dose assessment, and shielding design optimization.

The engineer will also support verification and validation activities and contribute to licensing and regulatory interactions by providing technically sound and defensible shielding analyses.

Specific responsibilities may include:

• Perform the complete range of actions involved in supporting shielding design, radiation transport analysis, and dose assessment for using Monte Carlo and supporting codes on Oklo facilities.

• Perform calculations and analyses in Monte Carlo based radiation transport codes such as MCNP, SCALE, OpenMC, and Serpent.

• Perform source term, activation, streaming, skyshine, and dose-rate analyses using appropriate Monte Carlo and deterministic methods.

• Support the qualification and verification of shielding analyses, including validation against experiments, benchmarks, and operationally relevant radiation measurements.

• Be aware of and familiar with radiation shielding, radiation transport, and fast reactor core design and analysis work being performed internationally, as well as related benchmark calculations and experiments being performed internationally.

• Provide technical feedback to quick-iterating design teams.

• Document work using modern tools and techniques, and write well-written, thoughtful technical reports.

Minimum Qualifications:

If you have experience and expertise in reactor design, radiation transport, or shielding analysis, apply! We also think the following are good indicators of qualifications to do this job:

• Bachelor’s, Master’s, or PhD in a technical field, such as nuclear engineering, with experience in reactor design, radiation transport, shielding analysis, or radiation protection (Master’s or PhD may be preferable).

• Fluency with Python.

• Proficiency with high performance computing systems.

• Experience with fast reactor design, shielding design, or radiation protection analysis is highly recommended.

• Proficiency with radiation transport tools such as MCNP, SCALE, OpenMC, and Serpent is highly recommended.

• Proficiency with variance reduction techniques such as weight windows, surface read/write, source biasing, and CADIS/FW-CADIS methods is recommended.

• Experience with source-term generation, activation, dose-rate calculations, and shielding design methods is recommended.

• Proficiency with CAD software such as SolidWorks is a plus.

Competencies

We are looking for a Shielding Analysis Engineer that is:

• Passionate about clean energy.

• Passionate about making advanced fission a reality.

• Willing and able to learn quickly.

• Knowledgeable about fast reactor design and radiation shielding considerations.

• Highly skilled with Monte Carlo radiation transport tools such as SERPENT, MCNP, SCALE, OpenMC, and Serpent.

• Skilled with shielding, source-term, activation, and dose assessment methods, or willing and eager to learn.

• Skilled with variance reduction techniques and tools, such as weight windows, surface source read/write, source biasing, and CADIS/FW-CADIS methods.

• Eager to work on a dynamic team, receive constructive feedback, and grow with us.

• Willing to think differently and do things in new ways.

• Comfortable in a fast-paced, highly iterative startup environment.

• Excited to think creatively, critically, and reflectively about the problems they are solving, while not leaning only on what has been done before.

• Willing to propose novel and creative solutions to technical problems.

• An excellent writer who can write in modern active voice, so make your cover letter compelling and write it well!

• Able to communicate technical content and results verbally.

Who you are:

A startup person: You aren’t driven by titles or hierarchy, and prefer efficiency to excess process. You don’t need or expect to have a lot of guidance but you enjoy working in a fast-paced team. If you prefer the culture and feel of a large organization, that is great, but you likely won’t enjoy working with us! There is plenty of important work and plenty of good opportunities with organizations like that.

Motivated: You are self-motivated. You bring an enthusiasm to the team, and imbue a sense of passion that goes beyond clocking in and clocking out. This isn’t about a fake or arbitrary “pieces of flair” mentality or lack of work-life balance! It is about being a part of the vision and feeling a part of reaching team goals.

A team-player: Oklo genuinely is a team. We aren’t about taking credit for ourselves, and we aren’t about pushing blame to others. We do incredible things because we work as a team.

An excellent communicator: We need a person who is not only technically competent but also a clear and upbeat communicator.

Creative: Being creative means that when things fall outside clear scopes or processes or problems arise without clear solutions, you are able to identify it as well as invent ways to solve a problem or fill a need without micromanagement. The successful person in this job will not only be creative, but also enjoy being creative and solving open-ended problems which may change day-by-day.

Detail-oriented: This focus is a big part of excellence, consistency, and quality. Excellent grammar and spelling matter for both good communication as well as the image of the company that we put forward.

About Oklo travel requirements:

Oklo requires remote employees to travel to headquarters (Santa Clara, CA) twice a quarter annually, based on business or team needs, including attendance at team meetings, off-sites, and other company events or gatherings. For the first two weeks of onboarding, employees are required to be in person at headquarters in Santa Clara, CA.

About Oklo compensation:

Salary: $102,000-$225,000

Oklo offers flexible time off, equity, bonuses, competitive pay, 401(k), health insurance (with employer contribution), HSA, FSA, flexible work hours, wellness credits, and other benefits.

This position may involve access to information subject to U.S. export control laws. Only applicants who meet the definition of a U.S. person under applicable laws may be eligible.

About Oklo Inc.: Oklo Inc. is developing fast fission power plants to deliver clean, reliable, and affordable energy at scale; establishing a domestic supply chain for critical radioisotopes; and advancing nuclear fuel recycling to convert nuclear waste into clean energy. Oklo was the first to receive a site use permit from the U.S. Department of Energy for a commercial advanced fission plant, was awarded fuel material from Idaho National Laboratory, and submitted the first custom combined license application for an advanced reactor to the U.S. Nuclear Regulatory Commission. Oklo is also developing advanced fuel recycling technologies in collaboration with the U.S. Department of Energy and U.S. National Laboratories.

#CHOP: Oklo’s Values

Collaboration: We go further, together. We bring diverse perspectives, listen actively, and build trust through transparency and respect. We work across disciplines, sharing ownership to turn complex challenges into shared successes.

Humility: We are team players who act for the good of the company and for the world. We are focused on our mission, not personal recognition.

Ownership: We take pride in what we do and how we do it. We are proactive in finding solutions and see tasks through  to completion. We are committed to delivering on our promises to provide clean, reliable, and affordable energy.

Pathfinding: We chart new ground where no path exists by approaching challenges with curiosity, courage, and creativity while navigating ambiguity.

Candidates should be aware that employment may be contingent upon successful completion of a drug screening, and employees may be subject to drug testing at any time in accordance with company policy and applicable laws.

Recruitment Fraud Disclaimer

Oklo is aware of recent recruitment fraud attempts targeting job seekers. Please be cautious of anyone claiming to represent Oklo who does not contact you from an official Oklo email address.

All legitimate communications from our recruiting team— including application updates, interview requests, and job offers — will come exclusively from an @oklo.com email. Oklo will never ask for sensitive personal information, payments, or account credentials during the hiring process.

If you receive suspicious outreach or have concerns about the authenticity of any communication claiming to be from Oklo, please contact us through the official channels listed on our website.

About PostHog

Product development used to mean manually writing code, running analysis, diagnosing bugs, and rolling out changes using dozens of tools.

PostHog is the only platform that acts like a co-pilot for you (and your AI agents) to do it all – autonomously.

We started with open-source product analytics, launched out of Y Combinator’s W20 cohort. We’ve since shipped more than a dozen products, including:

• PostHog Code, the only AI devtool that understands your product, not just your codebase.

• A built-in data warehouse, so users can query product and customer data together using custom SQL insights.

• PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries.

We are:

1. Product-led. More than 450,000 organizations have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.

2. Default alive. Revenue is growing incredibly quickly, and we’re very efficient. We raise money to push ambition and grow faster, not to keep the lights on.

3. Well-funded. We’ve raised more than $180m from some of the world’s top investors. We’re set up for a long, ambitious journey.

We’re focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.

Things we care about

• Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions.

• Autonomy: We don’t tell anyone what to do. Everyone chooses what to work on next based on what’s going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed.

• Shipping fast: Why not now? We want to build a lot of products; we can’t do that shipping at a normal pace. We’ve built the company around small teams – autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end.

• Time for building: Nothing gets shipped in a meeting. We’re a natively remote company. We default to async communication – PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you’ve ever had.

• Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We’re optimistic about what’s possible and our ability to get there.

• Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it’s fun.

Who we’re looking for

We’re looking for people (US - Central/Eastern Timezone) that like deep ownership of production systems, people that are not afraid of working with stateful infrastructure and love working in AWS, VMs, automation, and making messy systems reliable.

In general we seek SRE’s who are:

• Enthusiastic drivers. We need proactive people that can fully own projects and get them done, and know to get help when needed. “Are we there yet?” is the wrong question.

• Optimistic problem solvers. Things get hard here sometimes, whether it’s scaling, shipping complex products, handling a stream of support requests, or trying to ship something that touches multiple teams. We need people who won’t get disheartened, and will collaborate, iterate, and ship their way out of anything.

• Grown ups. We’re an international bunch of weirdos, but one thing unites us: everyone is kind, considerate, and professional towards each other. This isn’t about age or experience, it’s about being low-ego, flexible, and respectful.

• Genuine builders. PostHog is full of people who just love building stuff, people who would still be building software even if there wasn’t a paycheck at the end. If this sounds like you, we should talk.

What you’ll be doing

You won’t be in a typical “keep the lights on” SRE role. The work is about turning a fast-growing, stateful system into a predictable, well-automated platform. (provisioning, scaling, rebalancing, recovery)

That means reducing operational stress, designing safe automation for traffic-heavy workloads, and building the tooling and patterns that let the system scale without scaling human effort.

You’ll work on the kind of problems that only show up at large scale (petabytes of data, thousands of cores, constant ingestion) across a multi-region, multi-account AWS platform running many services on Kubernetes.

• Operating EKS clusters across several environments with Karpenter autoscaling, Cilium networking, and ArgoCD-driven GitOps deployments

• Managing and evolving a multi AWS account organization, provisioning, networking, access control, and cross-account connectivity

• Maintaining the Terraform/Terragrunt IaC platform - modules, automated plan-on-PR / apply-on-merge pipelines, and safe patterns for shared infrastructure

• Improving operational tooling around deploys, schema changes, backups, restores, and incident response

• Reducing operational load by identifying repeat pain points and eliminating them through code and self-healing automation

• Optimizing cloud spend as you go

• Participating in on-call and incident response, with a strong focus on making incidents rarer over time

You’ll have room to design and automate, not just respond to alerts. You should join this team if you like deep ownership of production systems and enjoy building the platform layer that everything else runs on.

Requirements

• Deep hands-on experience with Kubernetes in production (EKS preferred). You’ve debugged node pressure, networking issues, and deployment failures at scale (thousands of nodes)

• Strong experience operating production infrastructure on AWS. Not just one account, but understanding organizational boundaries, IAM, and networking between many

• Experience automating infrastructure using Terraform or Terragrunt at scale, including module design and state management

• Solid understanding of Linux systems (disk, memory, networking, failure modes)

• Experience supporting stateful systems (databases, queues, storage systems, etc.)

• Ability to debug and reason about performance and reliability issues in production

• You’re comfortable owning systems end-to-end, including on-call responsibilities

You don’t need to be an expert in every system we run on day one. But you do need to enjoy owning complex infrastructure and learning how the pieces fit together.

Nice to have

• Experience with GitOps workflows (ArgoCD) and CI/CD pipelines (GitHub Actions)

• Experience with building AI agent-enabled base-level infra services for teams that move fast

• Familiarity with multi-region infrastructure and the consistency/availability tradeoffs that come with it

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know.

#LI-DNI

About PostHog

Product development used to mean manually writing code, running analysis, diagnosing bugs, and rolling out changes using dozens of tools.

PostHog is the only platform that acts like a co-pilot for you (and your AI agents) to do it all – autonomously.

We started with open-source product analytics, launched out of Y Combinator’s W20 cohort. We’ve since shipped more than a dozen products, including:

• PostHog Code, the only AI devtool that understands your product, not just your codebase.

• A built-in data warehouse, so users can query product and customer data together using custom SQL insights.

• PostHog AI, an AI-powered analyst that answers product questions, helps users find useful session recordings, and writes custom SQL queries.

We are:

1. Product-led. More than 450,000 organizations have installed PostHog, mostly driven by word-of-mouth. We have intensely strong product-market fit.

2. Default alive. Revenue is growing incredibly quickly, and we’re very efficient. We raise money to push ambition and grow faster, not to keep the lights on.

3. Well-funded. We’ve raised more than $180m from some of the world’s top investors. We’re set up for a long, ambitious journey.

We’re focused on building an awesome product for end users, hiring exceptional teammates, shipping fast, and being as weird as possible.

Things we care about

• Transparency: Everyone can read about our roadmap, how we pay (or even let go of) people, our strategy, and how we work, in our public company handbook. Internally, we share revenue, notes and slides from board meetings, and fundraising plans, so everyone has the context they need to make good decisions.

• Autonomy: We don’t tell anyone what to do. Everyone chooses what to work on next based on what’s going to have the biggest impact on our customers, and what they find interesting and motivating to work on. Engineers lead product teams and make product decisions. Teams are flexible and easy to change when needed.

• Shipping fast: Why not now? We want to build a lot of products; we can’t do that shipping at a normal pace. We’ve built the company around small teams – autonomous, highly-efficient groups of cracked engineers who can outship much larger companies because they own their products end-to-end.

• Time for building: Nothing gets shipped in a meeting. We’re a natively remote company. We default to async communication – PRs > Issues > Slack. Tuesdays and Thursdays are meeting-free days, and we prioritize heads down building time over perfect coordination. This will be the most productive job you’ve ever had.

• Ambition: We want to solve big problems. We strongly believe that aiming for the best possible upside, and sometimes missing, is better than never trying. We’re optimistic about what’s possible and our ability to get there.

• Being weird: Weird means redesigning an already world-class website for the 5th time. It means shipping literally every product that relates to customer data. It means building an objectively unnecessary developer toy with dubious shareholder value. Doing weird stuff is a competitive advantage. And it’s fun.

Who we’re looking for

We’re looking for people (EU/UK based) that like deep ownership of production systems, people that are not afraid of working with stateful infrastructure and love working in AWS, VMs, automation, and making messy systems reliable.

In general we seek SRE’s who are:

• Enthusiastic drivers. We need proactive people that can fully own projects and get them done, and know to get help when needed. “Are we there yet?” is the wrong question.

• Optimistic problem solvers. Things get hard here sometimes, whether it’s scaling, shipping complex products, handling a stream of support requests, or trying to ship something that touches multiple teams. We need people who won’t get disheartened, and will collaborate, iterate, and ship their way out of anything.

• Grown ups. We’re an international bunch of weirdos, but one thing unites us: everyone is kind, considerate, and professional towards each other. This isn’t about age or experience, it’s about being low-ego, flexible, and respectful.

• Genuine builders. PostHog is full of people who just love building stuff, people who would still be building software even if there wasn’t a paycheck at the end. If this sounds like you, we should talk.

What you’ll be doing

We run one of the largest self-managed ClickHouse installations on AWS, at petabyte scale, and we’re actively preparing it for the next 10–50× of growth. This role sits at the centre of that effort.

You won’t be in a typical “keep the lights on” SRE role. The work is about turning a fast-growing, stateful system into a predictable, well-automated platform. (provisioning, scaling, rebalancing, recovery)

That means reducing operational stress, designing safe automation for data-heavy workloads, and building the tooling and patterns that let the system scale without scaling human effort.

You’ll work on the kind of problems that only show up at large scale (petabytes of data, thousands of cores, constant ingestion).

• Managing large fleets of EC2-based VMs, disks, and networking for data-intensive workloads

• Improving operational tooling around deploys, schema changes, backups, restores, and incident response

• Working closely with ClickHouse engineers to turn database-level needs into infra-level solutions

• Reducing operational load by identifying repeat pain points and eliminating them through code and self-healing automation

• Participating in on-call and incident response, with a strong focus on making incidents rarer over time

• You’ll have room to design and automate, not just respond to alerts.

You should join this team if you like deep ownership of production systems, and are not afraid of working with stateful infrastructure

Requirements

• Prior experience with ClickHouse or other OLAP databases

• Strong experience operating production infrastructure on AWS

• Hands-on experience with VM-based systems (EC2), not just managed PaaS

• Experience automating infrastructure using tools like Terraform, Ansible, or similar

• Solid understanding of Linux systems (disk, memory, networking, failure modes)

• Experience supporting stateful systems (databases, queues, storage systems, etc.)

• Ability to debug and reason about performance and reliability issues in production

• You’re comfortable owning systems end-to-end, including on-call responsibilities

You don’t need to be a ClickHouse expert on day one. We’ll teach you the database internals, but you do need to enjoy owning complex infrastructure.

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know.

#LI-DNI

The Role

Istari’s software doesn’t just get handed off, it gets deployed into some of the most complex engineering environments in aerospace and defense.  As a Forward Deployed Engineer, you’ll be embedded directly inside our customer organizations, operating as part of their team while remaining tightly connected to Istari’s product and engineering core.

This is not a support role.  You are a builder.  You’ll write real code, architect integrations, and solve hard problems that emerge at the intersection of digital engineering workflows and mission-critical operations.  The challenges you’ll tackle require the instincts of a strong software engineer and the adaptability of someone who thrives in unstructured environments.  Challenges like connecting CAD, CFD, FEM pipelines to Istari’s platform; unlocking cross-discipline and cross-clearance collaboration; enabling organizations to actually use the tools in which they’ve invested.

You’ll work alongside Istari Program Managers who are embedded in the same customer environments.  They carry the program context and stakeholder relationships while you own the technical execution.  Together, you operate as a unit capable of handling almost anything a customer throws at you.  The best Forward Deployed Engineers make our product smarter, not just our customers happier.

Core Responsibilities:

Onsite Technical Delivery

• Embed with customer engineering teams to understand their workflows, data environments, and technical constraints

• Architect and build software solutions that integrate Istari’s platform into existing digital engineering ecosystems (CAD, CFD, FEM, simulation pipelines, and related toolchains)

• Serve as the primary technical interface for the customer – not just answering questions, but proactively identifying where our software can drive more value

Software Development

• Develop, test, and maintain integrations and workflow solutions following modern software engineering practices

• Write clean, maintainable code that can be productized or reused across customer deployments

• Contribute to internal tooling and documentation that scales your knowledge across the team

Feedback Loop to Product

• Translate field experience into actionable product insights — you are one of Istari’s clearest signals on what customers actually need

• Participate in internal engineering reviews, architecture discussions, and roadmap planning

• Help develop proposals and technical approaches for new customer opportunities

Required Qualifications:

Required

• Strong software engineering fundamentals — you write production-quality code and can defend your architectural decisions

• Hands-on experience with digital engineering toolchains: CAD, CFD, FEM, or related simulation and modeling environments

• Comfort operating in ambiguous, fast-moving environments without a lot of hand-holding

• Ability to work on-site with customers in a U.S. defense or aerospace context (clearance eligibility required; active clearance a strong plus)

• U.S. citizenship required

Preferred

• Experience integrating engineering software into larger data or workflow platforms

• Background in aerospace, defense, or other systems-engineering-heavy industries

• Exposure to Model-Based Systems Engineering (MBSE) or digital thread / digital twin concepts

• Exposure to or direct experience with advanced CAD, CFD, or FEM tools

Why This Role?

The engineers who do this job well become some of the most technically well-rounded people in the industry. You’ll see how large, complex organizations actually work – not just the happy path. You’ll build things that get used immediately. And because you’re reporting into Istari’s Customer Success org (not a sales or account team), your career trajectory stays technical.  You’ll also have the Istari team behind you: regular syncs, access to internal engineering resources, and a clear path to influence the product you’re deploying.

About Istari Digital

Istari is a digital engineering software company building open, scalable infrastructure for engineering data. Our platform lets customers simply and securely integrate engineering models across disciplines, organizations, and security levels – whether they’re designing prototypes, performing virtual testing, or training AI and autonomy for complex systems.

Focus is rewarded.  Finish is remembered.

Facts are friendly.  Even when they are not fun.

Fellowship is fundamental.  Make others successful.

$143,000 - $165,000 a year

The anticipated compensation range for this position may vary based on experience, skills, qualifications, location, and business needs. In addition to base salary, this role may be eligible for bonuses, equity, and a comprehensive benefits package.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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