Fullstack Software Engineer

As a Fullstack Software Engineer, you will build internal products that help Pi’s research and operations teams move faster. You will work closely with researchers, prototypers, operators, and other engineers to turn operational workflows into reliable software.

The Team

Fullstack builds the internal software the rest of Pi runs on. Our users span the path from research intent to physical execution: researchers designing experiments and requesting data, Research Ops working across feasibility, task design, environments, prototyping, and instructions, and Production Ops running data collection, evals, and deployments across our lab, warehouse, and real-world deployments.

Annotation sits at the front of that chain, determining what our models learn from the data we collect, and this is where this role will start.

In This Role You Will

• Own annotation tooling: Build the platform and workflows for annotation generation, from the interfaces annotators work in to the pipelines behind them, and translate requirements from researchers into an actionable plan and the software to execute it.
• Make annotation legible: Build the systems that track quality, cost, throughput, and coverage so researchers can see what they are getting and decide what to change.
• Own researcher request and planning workflows: Redesign how researchers and prototypers turn ambiguous research needs into executable work, and create the software layer for understanding capacity and making tradeoffs across competing priorities.
• Build research and ops-facing tooling: Dataset browsing, eval dashboards, and the throughput, quality, and progress tracking Production Ops needs across our lab, warehouse, and real-world sites.
• Act as your own PM: Gather requirements, prioritize work, define success metrics, write specs, ship tools, drive adoption, and iterate based on feedback.
• Ship production-quality software: Build reliable frontend interfaces, backend APIs, data models, dashboards, and cloud services. You should be comfortable shipping and supporting production-grade services.

• Strong full stack engineering experience building production web applications and APIs, especially with React, TypeScript, and Python.
• Experience with relational databases (we use Postgres), analytical systems (ClickHouse), and queueing systems.
• Familiarity with cloud and containerized environments such as GCP and Kubernetes.
• Comfort designing workflows where people, models, and software have to function as one system.
• Strong product judgment and attention to detail.
• Experience working directly with users, iterating from feedback, and navigating ambiguous workflows and evolving requirements.
• Ability to start with a practical v0 and build toward scalable, production-quality systems.

Bonus Points

• Former founder, early employee, or other demonstration of comfort with ambiguity and solving hard problems end to end.
• Experience building data labeling platforms, human-in-the-loop tools, or other data-centric AI systems.
• Experience building internal tools specifically for research, robotics, or operationally-intensive problems.
• Experience with tasking systems, instruction management, scheduling, resource allocation, or workflow orchestration.
• Experience with our specific stack: React, TypeScript, Python, Postgres, ClickHouse, GCP, and Kubernetes.