Fullstack Developer 3

Requirements:

• 5+ years shipping production software with real end-to-end ownership across a full stack (Python and TypeScript/React).
• Hands-on experience taking LLM features to production architecture, tool-calling, and retrieval, not just prompting.
• Fluency with evaluation and testing for AI systems: how you know something works before a user tells you it doesn't.
• Strong system-design fundamentals: streaming, concurrency, SQL, and reasoning about scale and cost from first principles.
• Comfort with ambiguity and high-stakes calls on limited data, plus generative AI tooling (Claude Code, Codex) as daily instruments you direct and verify.

Nice-to-Have:

• Voice or real-time systems experience: STT/TTS, barge-in, latency budgets, telephony.
• Founding or early-stage engineer background evidence you can operate without a playbook.
• Functional languages (OCaml, Haskell, Scala, Rust) or hardware description languages as a signal of depth and range.
• Multi-agent orchestration, negotiation flows, or other complex tool-use systems.
• Open-source work or personal projects shipping at scale; competitive programming as a supplementary signal.