San Francisco, US · Full-time · $140k-$200k + Equity

Software Engineer

Own core systems across our open-source runtime so assistant-ui stays fast, reliable, and delightful to build on.

What you'll do

Design and implement features across the stack, from realtime collaboration to rendering pipelines.
Improve developer ergonomics with thoughtful APIs, tooling, and documentation.
Measure and maintain performance, reliability, and quality.
Partner with customers and the community to diagnose issues and ship fixes quickly.

What you'll bring

5+ years shipping production software in TypeScript, Node, or similar stacks.
Experience with realtime systems, streaming data, or complex UI state.
Strong testing instincts and a love for diving deep into edge cases.
Comfort working in a small, high-ambiguity environment.

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