[Remote] (Senior) Product Engineer (m/f/d)

Note: The job is a remote job and is open to candidates in USA. 1KOMMA5° is committed to creating a sustainable energy future by integrating renewable energy solutions. As a (Senior) Product Engineer, you will take end-to-end ownership of features and workflows, collaborating with cross-functional teams to build AI-powered product experiences that enhance efficiency and quality.

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
• 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
• 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

• You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen
• With your work, you accelerate the "energy transition" and hence have a direct impact on our climate
• Work with and learn from other super-smart colleagues
• You will enjoy direct contact with core decision-makers
• You will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups
• You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich
• Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass
• Benefits and discounts are yours with Futurebens
• Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time

Company Overview