About Scrimdata
Scrimdata builds frontier RL environments from real company data. We license the operational history of real companies, run it through our own anonymization pipeline, and turn it into multi-step, multi-tool training environments: tasks, rubrics, verifiers, and reference trajectories, graded against what actually happened. We're an early-stage, remote-first team selling to two sides of one market: AI labs and enterprise agent teams who train on our environments, and data partners who supply the raw material. Small team, hard problems, real customers from day one.
About the role
We're hiring a Staff Fullstack Engineer to own the platform end to end. That means the customer-facing side: the environment catalogs labs browse and license, and the trajectory review tooling that replays an agent's run side by side with the reference trajectory so a customer can see exactly where it diverged. It means the data-partner side: the estimator that scopes an incoming archive and the secure intake path that gets it into the pipeline. And it means the internal tooling that the anonymization team leans on every day to move a raw archive to a sealed digital twin. You'll be one of the first engineers setting technical direction across all of it, on a team small enough that your architecture decisions from month one are still load-bearing in year three.
What you'll do
- Design and build the customer-facing product surfaces: environment catalog browsing and licensing flows, and trajectory review tooling that replays agent runs against reference trajectories
- Build the data-partner experience: the estimator that scopes an incoming archive's value, and the secure intake flow that gets partner data into the anonymization pipeline safely
- Build and maintain internal tooling for the anonymization pipeline team: ingestion dashboards, consistency-verification views, audit trails for what was transformed and how
- Own architecture decisions across the frontend, backend, and the data layer connecting them, since there is no separate platform team to hand this off to yet
- Take a feature from a rough product idea through design, implementation, and production, with minimal handoff
- Set technical standards and patterns as the team grows: code structure, testing approach, deployment practices, the things a bigger team will inherit
- Work directly with the founders and the anonymization and environment-construction teams to make sure what you build matches how the pipeline actually behaves in production
What we're looking for
- 7+ years shipping production software, with real ownership of systems end to end
- Strong fullstack expertise: comfortable in a modern frontend stack (React/TypeScript) and a backend language such as Python, and able to move fluidly between the two
- A track record of leading projects with real scope and real ambiguity, not just executing a spec someone else wrote
- Product instincts: you care about usability and maintainability as much as correctness, and you can make the call when nobody else will
- Comfortable working independently on a small team, where the fastest path to an answer is usually building it yourself
- Strong technical communication, since you'll be explaining tradeoffs to founders, customers, and future teammates
- Startup experience, ideally early-stage or as a founder yourself
Nice to have
- Experience building tooling around data pipelines, ETL, or anonymization/privacy-preserving systems
- Familiarity with RL environments, evals infrastructure, or agent-training workflows
- Experience building marketplace or two-sided product surfaces
- CS degree from a strong program or equivalent hands-on background
Benefits
Meaningful early equity. Remote-first, work from wherever you do your best work. Standard benefits package.
How to apply
Email careers@scrimdata.com with your resume and links to products you've shipped. No forms.