Note: The job is a remote job and is open to candidates in USA. 1KOMMA5° is building an intelligent, integrated renewable energy system with Heartbeat AI to accelerate the global transition to solar, batteries, heat pumps, and e-mobility. The Product Engineer will own features and workflows end-to-end, collaborate with product managers, designers, and engineers, and build AI-powered product experiences that scale Growth and Operations globally.
Responsibilities
- Own feature development end-to-end, from problem framing to production deployment and long-term maintenance
- Build and integrate AI-powered product experiences using LLMs, agents, and tool-use patterns
- Define feature scope together with PMs - engage with the "why", not just the "what"
- Contribute to architectural decisions, API design, and AI integration patterns across the teams
- Keep feedback loops short: prototype, ship to real users, observe, adjust
- Push back when something doesn't make sense and propose better approaches
Skills
- Strong fullstack proficiency in TypeScript, React / Next.js, and Node.js / NestJS
- 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
- Residency in Germany
- Real, demonstrable experience building with LLMs, APIs, or MCPs - production use preferred
- German is a plus
- 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
Benefits
- Part of an international, dynamic, and highly motivated team
- Work that accelerates the energy transition and has a direct impact on the climate
- Work with and learn from colleagues
- Direct contact with core decision-makers
- Work remotely Germany-wide, with offices in Hamburg, Berlin or Munich
- EGYM Wellpass benefits
- Benefits and discounts through Futurebens
- Job bike leasing for city bikes or e-bikes
Company Overview