Fullstack Engineer - Cofounder
- Location
- New York City, NY · On-site
- Job type
- Full-time
- Level
- Senior
- Experience
- 4+ years
- Listed
- 23 days ago
Skills & highlights for this role
- React
- Next.js
- TypeScript
- FastAPI
Also useful
- Postgres
- WebSockets
- LLM agent tool-use
- CI/CD
What You’ll Own
- End-to-end product work across the agent experience: flows, integrations, and UI/UX
- Flows: creation, editing, run criteria, execution reliability, and observability
- Integrations: add new integrations and deepen existing ones
- UI/UX: work on novel, interesting ways of building human<>agent interactions
- Product sense for complex UX: making powerful systems feel simple and reliable
- Ship features across the stack with a tight feedback loop from real users (frontend + backend)
- Improve performance, reliability, and cost across agent runs and flow execution
- Build instrumentation, analytics, and developer tooling to speed up iteration
- Maintain a high bar for code quality, tests, observability, and documentation
Requirements
- 4+ years building and shipping user-facing products end to end
- Frontend: React/Next.js (or equivalent), TypeScript; component-driven development, performance profiling, accessibility, data fetching/state, optimistic UI and cache invalidation
- Backend: Python FastAPI, background workers/queues, webhooks, Postgres (or similar) schema design, transactions, migrations
- Solid testing and observability habits (unit/integration tests, metrics, traces, structured logs)
- Bias to ship: scope thin slices, deliver quickly, instrument, iterate
Nice to Have
- Event-driven architectures, WebSockets/real-time UIs
- LLM/agent experience: tool-use patterns, prompt hygiene, guardrails, evaluation
- Infra familiarity (Vercel/AWS/Modal/Supabase/Redis Cloud or equivalent), CI/CD, feature flags
About Cofounder
At General Intelligence, we’re building highly-capable autonomous agents for startups. Our goal is to enable the one-person, one-billion-dollar company.
Our product, Cofounder, enables entrepreneurs to start and run companies. Using it should feel more like a company-building game where users coordinate agents, unlock roadmap nodes, run missions, build artifacts, grow departments, and make revenue go up.
Why Join
- Ship directly to engaged users; your work is visible and high-impact
- Build the core of an autonomous agent platform with real integrations and real workloads
- Small, elite team; high ownership; fast decisions; zero bureaucracy
From The General Intelligence Company of New York's careers page, first listed on Rolev.ai on October 17, 2026. Rolev.ai is not the employer.
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Common questions
Where is the Fullstack Engineer - Cofounder job at The General Intelligence Company of New York located?
This Fullstack Engineer - Cofounder position at The General Intelligence Company of New York is located in New York City, NY (On-site). Always check The General Intelligence Company of New York's application page for specific state eligibility or relocation policies.
What qualifications are required for Fullstack Engineer - Cofounder at The General Intelligence Company of New York?
For the Fullstack Engineer - Cofounder role, The General Intelligence Company of New York highlights 4+ years of relevant experience; experience with React, Next.js, TypeScript, FastAPI. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Fullstack Engineer - Cofounder position at The General Intelligence Company of New York?
This listing links directly to The General Intelligence Company of New York's Ashby application page. You can apply directly on The General Intelligence Company of New York's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.