Jobs → Engineering → Full Stack Engineer

About the Role We are looking for a Full Stack Engineer to join a venture-backed startup building infrastructure that helps companies understand, debug, and improve AI agents running in production. Key Responsibilities • Own product development end-to-end—from customer conversations and problem discovery through deployment and iteration. • Build interfaces for investigating AI agent behavior, debugging workflows, and evaluating reliability. • Develop APIs, data models, and backend systems alongside polished frontend experiences. • Build core platform capabilities, including workspaces, permissions, billing, usage tracking, and SDKs. • Work directly with customers to turn production challenges into useful product improvements. Requirements • 5–8 years of full-stack product engineering experience, with a backend emphasis. • A recent track record of shipping user-facing products across both the frontend and backend. • Recent experience at a leading product company or a Series B or later startup backed by top-tier investors. • Strong TypeScript and React/Next.js skills, plus Python or Node.js. • Ability to design clean APIs, model data effectively, and troubleshoot production issues across the stack. • Strong code quality, ownership, and comfort navigating a fast-moving startup environment. • Availability to work full-time on-site in San Francisco.