What it’s about You’ll ship production-ready features for AreaButler and EstateButler — end-to-end, from API design to the frontend. The focus: integrating existing LLMs in a meaningful way (OpenAI, Google Gemini, Anthropic Claude, Mistral), orchestrating prompts and RAG, and stabilizing workflows. We do not train our own foundation models.
What you bring • 5+ years of full-stack experience, including 2+ years with TypeScript (Node + React) • Proven experience integrating LLMs (no model training required) • Solid architecture skills (e.g. Ports/Adapters), API design, security & GDPR mindset • German at least B2 level and a hands-on attitude
Nice to have • Billing/Stripe, Webhooks, OAuth • Prompt-engineering patterns, RAG tuning, evaluation metrics (reliability/latency)
Framework & culture • Location: Hamburg (hybrid); remote within Germany possible, with occasional team days in Hamburg • Languages: German (B2+) & English (technical) • Work style: short communication paths, pragmatic, ship small, ship often • Security & privacy: GDPR compliance, PII handling, least privilege, clean logging • Equipment & tools: modern hardware, AI APIs, monitoring, staging/preview environments
Sounds like your stack? Send us your application — we’d love to get in touch.
