(Senior) Product Engineer (m/f/d)

About This RoleAI processing…

Key Responsibilities

• 1
  Own feature development end-to-end, from problem framing to production deployment and long-term maintenance
• 2
  Build and integrate AI-powered product experiences using LLMs, agents, and tool-use patterns
• 3
  Define feature scope together with PMs - engage with the "why", not just the "what"
• 4
  Contribute to architectural decisions, API design, and AI integration patterns across the teams
• 5
  Keep feedback loops short: prototype, ship to real users, observe, adjust
• 6
  Push back when something doesn't make sense and propose better approaches

Requirements

• Strong fullstack proficiency in TypeScript, React / Next.js, and Node.js / NestJS
• Real, demonstrable experience building with LLMs, APIs, or MCPs - production use preferred
• A product and customer mindset: you think about user problems, not just implementation elegance
• Proven ability to own features end-to-end, from rough problem statement to shipped, maintained product
• Experience working closely with PMs and designers in a cross-functional team
• Excellent written and spoken English; German is a plus
• Residency in Germany Bonus points for:
• Experience with agentic systems, tool-use patterns, or RAG pipelines
• Familiarity with the energy market, construction, sales, or climate tech context
• Prior experience in a startup or scale-up

Perks & Benefits