Senior Fullstack Engineer (AI)
autarc (YC S24)Berlin, Germany
Posted March 11, 2026
Full Time
About the Company
Founded in Berlin, autarc is a ~40 person start-up who were part of Y Combinator’s S24 batch in San Francisco.
Job Description
Join our AI team as a Senior Fullstack Engineer to ship production AI features end-to-end across web/mobile clients and Backend services. Build and own AI-powered product features from UI to Backend, integrating LLM and multimodal APIs with structure outputs, guardrails and prompt/version management.
Requirements
- 5+ years of professional experience in building SaaS
- Hands-on experience integrating LLM/multimodal APIs into production systems
- Strong Fullstack experience with TypeScript, React, Node and ideally NestJS
- Professional experience working Go and readiness to own new Go endpoints/services
- Solid SQL/Postgres skills and familiarity with object storage
- Product mindset: you can turn ambiguous requirements into stable, user-facing features
Benefits
- Freedom to choose your own equipment (within a budget)
- 26 paid vacation days
- An annual team retreat
- The choice between Dance or JobRad for mobility
- The choice between Classpass or Urban Sports Club for fitness
- Regular team events, lunches and activities