Senior Fullstack Engineer (AI)

Permanent employee, Full-time · Berlin

Company
Founded in Berlin, autarc is a ~40 person start-up who were part of Y Combinator’s S24 batch in San Francisco. Our team consists of people in Sales, Tech and Operations, with the Engineering & Product department currently ~20 people, as we continue to grow throughout the year.
Role description
This role is to join our AI team, where you will ship production AI features end-to-end across web/mobile clients and Backend services. This is an applied AI Engineering role: integrating modern models into reliable product workflows, not training models from scratch. 

You will work on features such as Computer Vision workflows for energy installers, voice agents, AI-powered automations and help scale new Backend services being built in Go. Further responsibilities include building and owning AI-powered product features from UI to Backend, integrating LLM and multimodal API's (OpenAI, Anthropic, Mistral etc.) with structure outputs, guardrails and prompt/version management. 

Other responsibilities include:
  • Develop and maintain Backend services in Typescript and Go
  • Build reliable async flows (webhooks, retries, idempotency, failure handling)
  • Build CV/imge/document analysis pipelines used in real installer workflows
  • Ship product-quality UX in React/Tailwind where needed, in close collaboration with Design
  • Instrument features with logs/metrics/tracing and improve reliability 
  • Contribute to testing strategy across Frontend and Backend
The role is Fullstack, with a 40/60 split between Frontend & Backend.
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
  • Based in Berlin with a willingness to work 3 days hybrid (office in Mitte)  
  • Fluent in English (German is a plus)
What we offer
  • 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
Next steps
If your application is successful, you will participate in the following:
  • Screening call with Louis (Recruiter)
  • Culture fit call with a Senior Engineer
  • Pair programming/live coding exercise 
  • Final on-site interview with Marius (CTO) and the team
About us
Right now, 25% of CO2 emissions in Europe are caused by heating our buildings. In order for this to be reduced, the transition towards renewable energy needs to be simplified and made more accessible. There are too few installers to meet the growing demand for heat pumps, and a solution to match this trend needs to be brought to the market.
autarc is developing the leading operating system (OS) for heat pump installers, enabling a more digital and efficient installation process for heat pumps.
Through this, autarc is reducing the hurdles to decarbonizing single-family homes and small apartment buildings in Europe, with the goal to help with the planning and designing of 1 million heat pumps by 2030.
Your application!
We appreciate your interest in autarc GmbH. Please fill in the following short form. Should you have any difficulties in uploading your files, please contact us by mail at hello@autarc.energy.
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