Fullstack Engineer - Cofounder
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Before you apply
SalaryNo pay range posted
LocationNew York
Work modeon-site
Typefull-time
SenioritySenior
Experience4+ yrs
DepartmentProduct - Cofounder
Company size1–10 people
PostedJul 23, 2026 · 3mo ago
Verified live10h ago
May no longer be actively hiring
Posted by the company on Jul 23, 2026No pay range listed, though New York requires one
At a glanceSummarised by Seekless from the posting.
4+ years building and shipping user-facing products end to end
Frontend: React/Next.js (or equivalent), TypeScript
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
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
Skills
React
Next.js
TypeScript
Python
FastAPI
Postgres
WebSockets
AWS
Vercel
Modal
Supabase
Redis Cloud
CI/CD
WebSockets/real-time UIs
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.
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
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Integrations: add new integrations and deepen existing ones
•
UI/UX: work on novel, interesting ways of building human<>agent interactions
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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)
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Improve performance, reliability, and cost across agent runs and flow execution
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Build instrumentation, analytics, and developer tooling to speed up iteration
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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
Why join
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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
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