Fullstack Engineer - Cofounder

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. 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 (Inngest/Temporal), WebSockets/real-time UIs LLM/agent experience: tool-use patterns, prompt hygiene, guardrails, evaluation Infra familiarity (Render/Modal/Supabase/Redis Cloud or equivalent), CI/CD, feature flags 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

{
  "content_hash": "4f1ac6f47db804eca8a8cea0026ecb298b5b90cbf7d5ad6c22624104301de375",
  "source_hash": "abd897a642ac7e177b5a5099542742548839d0c7aac9fe7d460b3a825e413f40",
  "last_changed_at": "2026-05-29T05:27:51.072Z",
  "active_status": "active"
}

{
  "language": "en",
  "location": {
    "raw": "New York",
    "city": "New York",
    "region": "NY",
    "country": "United States",
    "is_remote": false,
    "confidence": 0.75
  },
  "salary_max": null,
  "salary_min": null,
  "inferred_at": "2026-06-06T19:52:38.393Z",
  "launch_scope": {
    "reason": "english_us_canada",
    "included": true,
    "language": "en",
    "location": {
      "raw": "New York",
      "city": "New York",
      "region": "NY",
      "country": "United States",
      "is_remote": false,
      "confidence": 0.75
    },
    "countries": [
      "United States"
    ]
  },
  "remote_policy": null,
  "salary_period": null,
  "workplace_type": "on_site",
  "salary_currency": null
}

{}

{
  "id": "75232c77-90dc-46dc-837c-095ab4ed0b4c",
  "team": "Product - Cofounder",
  "title": "Fullstack Engineer - Cofounder",
  "jobUrl": "https://jobs.ashbyhq.com/generalintelligencecompany/75232c77-90dc-46dc-837c-095ab4ed0b4c",
  "address": null,
  "applyUrl": "https://jobs.ashbyhq.com/generalintelligencecompany/75232c77-90dc-46dc-837c-095ab4ed0b4c/application",
  "isListed": true,
  "isRemote": false,
  "location": "New York",
  "updatedAt": null,
  "apiVersion": "ashby-non-user-graphql-v1",
  "department": "Product - Cofounder",
  "publishedAt": null,
  "workplaceType": "OnSite",
  "employmentType": "FullTime",
  "secondaryLocations": []
}