Full Stack Engineer

About the Role

Join a team building software infrastructure that helps organizations improve the reliability of AI agents in production. This backend-leaning full-stack role combines product engineering with hands-on work on agent investigation, evaluation, and debugging workflows.

What You'll Do

• Build product experiences for agent investigations, evaluations, trajectory debugging, verification, and replay.

• Own problems end to end by speaking with customers, understanding agent failures, defining solutions, and iterating on shipped products.

• Develop APIs, data models, internal systems, and user-facing product features across the stack.

• Build systems that run large-scale investigations across production traces.

• Design platform capabilities such as workspaces, permissions, billing, usage, SDKs, and developer workflows.

• Work with teams building production AI agents and translate their needs into product decisions.

What We're Looking For

• Typically 5 to 8 years of full-stack product engineering experience, with a backend emphasis.

• Experience shipping polished products end to end, including React or Next.js interfaces, APIs, data modeling, and production debugging.

• Strong hands-on skills with TypeScript and React, plus Python or Node.js; familiarity with PostgreSQL is relevant.

• Demonstrated experience building AI agents, LLM-powered products, or agentic systems, and familiarity with agent architectures, evaluation, or debugging tools.

• Product-minded engineering experience, including customer discovery and influencing product decisions through hands-on work.

• Strong computer science fundamentals and a track record of delivering clean, consistent code in a fast-moving environment.

Compensation & Benefits

Base salary: $230,000 to $300,000 annually. Visa sponsorship is available.

Location

On-site in San Francisco, California, United States.