Full Stack Engineer

About the Role

Join a team building infrastructure that helps organizations improve the reliability of AI agents in production. In this backend-leaning full-stack role, you will work closely with customers and turn real-world agent challenges into polished product capabilities.

What You'll Do

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

• Own problems end to end by understanding customer needs, defining solutions, shipping features, and iterating based on results.

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

• Build agent capabilities for conducting large-scale investigations across production traces.

• Design platform systems such as workspaces, permissions, billing, usage, SDKs, and terminal-first developer tools.

• Work directly with AI teams to understand agent failures and translate those insights 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 end-to-end products with React or Next.js on the frontend and TypeScript, Python, or Node.js on the backend.

• Ability to build polished interfaces, design clean APIs, model data effectively, and debug production issues across the stack.

• Hands-on experience with AI agents, LLM-powered products, or agentic systems, including relevant APIs, architectures, evaluation, or debugging tools.

• Experience influencing product decisions through engineering and working directly with customers to shape shipped solutions.

• Strong computer science fundamentals and a track record of writing clean, consistent code.

• Experience with developer tooling or platform features such as SDKs, CLIs, permissions, billing, or account management is useful.

Compensation & Benefits

Base salary: $230,000 to $300,000 annually. Visa sponsorship is available. Equity details were not provided.

Location

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