Full Stack Engineer

ABOUT THE ROLE This is a full-stack engineering role at a small, senior team building AI infrastructure for enterprise environments. You will own product surfaces end-to-end, from the interfaces engineers and customers interact with, to the APIs and data models underneath, with direct impact on how the platform grows and scales. WHAT YOU'LL DO • Own complete product surfaces end-to-end, covering interfaces, APIs, and data models. • Split your time roughly 60% on frontend and API layer work and 40% on backend services. • Make complex system behavior legible and fast for engineers using the platform. • Define architecture, ship it to production, monitor its behavior, and fix what breaks. • Work without handed-down design files or specs, making the right calls independently. • Remove growth ceilings by making the customer-facing product obvious and intuitive. WHAT WE'RE LOOKING FOR • 5+ years building full-stack applications with shipped products in production. • Proficiency with modern frontend frameworks such as React or Vue, with an eye for making complex system behavior understandable through UI. • Strong backend fundamentals in languages such as Python, Go, Node.js, or Java, with experience designing and implementing production APIs and data models. • Genuine full-stack capability: comfortable going deep on distributed systems while also owning the interface layer. • Demonstrated ability to make architectural decisions independently and see them through to production. • Experience with databases and data modeling for systems requiring real-time performance. • Comfort with ambiguity and ownership, thriving without detailed specs or design files. • Startup-speed execution and a builder-oriented background. • Bonus: experience with knowledge graphs, semantic systems, graph databases, real-time inference, agent-based systems, or developer-facing infrastructure products. LOCATION On-site in San Mateo, California, United States. Visa sponsorship is available.