The General Intelligence Company
Fullstack Engineer - Cofounder
$225K–$300K
New York · On-site · Full-time · Posted Jul 23, 2026
- Experience
- 4+ years building and shipping user-facing products end to end.
About the job
Build and improve Cofounder, an agent-driven product for starting and running companies, working across frontend, backend, integrations, and agent workflows.
What you'll do
- Own end-to-end agent experience flows, integrations, and UI/UX.
- Ship full-stack features and improve flow execution performance, reliability, cost, instrumentation, and developer tooling.
- Maintain code quality, testing, observability, and documentation.
What they ask for
- 4+ years building and shipping user-facing products end to end.
- Frontend experience with React/Next.js (or equivalent) and TypeScript.
- Backend experience with Python FastAPI, background workers/queues, webhooks, and Postgres (or similar).
- Solid testing and observability habits, including unit/integration tests, metrics, traces, and structured logs.
Nice to have
- Event-driven architectures and WebSockets/real-time UIs.
- LLM/agent experience, or infrastructure familiarity, CI/CD, and feature flags.
Pay
$225K – $300K (base salary); 0.25% – 0.6% (equity; pay type not stated)
Tools
React/Next.js, TypeScript, Python FastAPI, Postgres, WebSockets, Vercel, AWS, Redis Cloud
AI focus
Build an autonomous agent platform; work on agent experience and workflows, integrations, and human-agent interactions. LLM/agent experience with tool-use patterns, prompt hygiene, guardrails, and evaluation is a nice-to-have.
Model-written summary · the original posting is authoritative