Senior Frontend Software Engineer | AI Developer Tooling

This is a hands-on senior IC role with meaningful ownership over frontend architecture and user experience. Proven experience shipping real-time user interfaces connected to AI or streaming systems Strong testing discipline, including automated testing (e.g., Playwright, Jest) Ability to remain hands-on while contributing to technical direction and mentoring others Strong collaboration skills across design, product, and backend teams Experience working across both startup environments and larger engineering organizations Preferred Experience Ownership of frontend architecture or design systems at a SaaS or developer-focused company Familiarity with modern API and data transport patterns (e.g., GraphQL, typed RPCs) Experience with advanced browser capabilities (e.g., web workers, WASM) Exposure to collaborative or state-synchronization systems Data visualization experience for technical or analytical users Strong fundamentals in frontend security and accessibility Experience with monitoring, observability, and experimentation tooling Work Environment & Expectations On-site role based in Palo Alto, California High-intensity, execution-focused engineering culture Strong emphasis on ownership, accountability, and production reliability Opportunity to work on foundational AI systems with significant technical depth Competitive compensation, healthcare coverage, equity participation, and relocation / visa support Show less