1KOMMA5°

Want to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow.

Learn more about our Product & Tech team!

Your mission

As a (Senior) Product Engineer at 1KOMMA5°, you will take end-to-end ownership of features and workflows, making key decisions on architecture, integration layer, and solution design. You'll collaborate closely with product managers, designers, and engineers across teams to ship things that genuinely move the needle for our customers - and you won't be shy about challenging assumptions or proposing a better direction.

Our Stack

TypeScript, React / Next.js (frontend) and Node.js / NestJS (backend)
AI-assisted development with Cursor and Claude Code
GCP / Vercel, GitHub Actions (CI/CD)
Linear, Notion, Figma, Miro

Key responsibilities include but are not limited to

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

Your profile

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