Founding Engineer

This is a founding engineering seat on a small, fast-moving team building multi-modal AI agents across voice, SMS, and email for the sports technology and sales automation space. You will own one of four core domains end-to-end, from architecture through daily production shipments, and make product decisions directly alongside customers with no PM layer.

Own an entire domain end-to-end, covering architecture, feature development, and production operations.

Join customer calls, synthesize feedback, and drive product decisions independently.

Build and optimize multi-modal agents targeting sub-500ms voice latency, high SMS response rates, and long-running conversation state across channels.

Define the quality bar for non-deterministic systems, including evals, prompt versioning, guardrails, and drift detection.

Work full-stack across React/Next.js frontends, Node.js backends, and Python voice services.

3 to 8 years of full-stack engineering experience with a track record of shipping 0-to-1 products at high-growth startups, as a founder, or on new-vertical teams at large tech companies.

Production proficiency in TypeScript with hands-on experience in Node.js and React/Next.js; this is a hard requirement.

Demonstrated production experience with LLM APIs or agent SDKs (such as Anthropic, OpenAI, Vercel AI SDK, or Mastra), not just tutorials or prototypes.