$225K – $300K • 0.25% – 0.6%/yr

Fullstack Engineer - Cofounder

United StatesUnited Statesfull-timemid
EngineeringFullstack Developer
3 views0 saves0 applied

Quick Summary

Overview

About Cofounder Cofounder is an autonomous agent platform that connects to your tools (Gmail, Slack, Notion, Linear, Google Workspace, GitHub, Airtable, etc.) to run workflows end to end. We’re building the operating system for one-person, billion-dollar companies.

Requirements Summary

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…

Technical Tools
fastapigoogle-workspacejavascriptnextjsnotionpostgresqlpythonreactredisslacktypescripta11yci-cddatabase-design

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.

  • 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

~1 min read
  • 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

~1 min read
  • 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

What We Offer

~1 min read
✓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

Location & Eligibility

Where is the job
United States
On-site within the country
Who can apply
US

Listing Details

Posted
September 29, 2025
First seen
May 6, 2026
Last seen
October 2, 2026

Posting Health

Days active
147
Repost count
0
Trust Level
32%
Scored at
October 1, 2026

Signal breakdown

freshnesssource trustcontent trustemployer trust
Newsletter

Stay ahead of the market

Get the latest job openings, salary trends, and hiring insights delivered to your inbox every week.

A
B
C
D
Join 12,000+ marketers

No spam. Unsubscribe at any time.

Fullstack Engineer - Cofounder$225K – $300K • 0.25% – 0.6%