Founding Engineer - Fullstack (m/w/d)
Core
Building end-to-end fullstack software (web, mobile, API) for a climate-tech startup to optimize heat pump installations and support craftsmen.
Role type
Founding Fullstack Engineer (IC)
Builds
End-to-end features including DB schema, API routes, frontend, and mobile apps for field technicians and project managers.
Domain
Climate-Tech / Construction Tech
Deliverable
production ML models | product features
Required skills
TypeScript, React/Next.js, React Native (Expo), SQL/Postgres, API design, AI tool usage (Claude Code, Cursor), Code reviews
Preferred skills
Experience with Supabase, n8n, Sentry, HubSpot, Lexware
Technologies
Next.js 16, React 19, TypeScript, Tailwind, Supabase, Postgres, React Native, Expo, NextAuth 5, n8n, Sentry, HubSpot, Lexware, Slack, Autarc
Responsibilities
Build features end-to-end from ticket to production, conduct code reviews, make API-level architecture decisions, leverage AI tools for development, challenge specs for technical and economic sense.
Seniority
Founding, hands-on IC