(Senior) Software Engineer Flutter (m/f/d)

Join our tech team in Berlin, Munich or Hamburg. 1KOMMA5° is building Germany’s largest one-stop shop for sales, installation and servicing of solar panels, heat pumps, power solutions and charging infrastructure – all interconnected.

As a Mobile Engineer you will shape our cross-functional culture from day one and build the Installation Manager, our app that digitizes operations from ground to rooftop. You will:

• Drive evolution of the 1KOMMA5° Installation Manager app for iOS & Android with Flutter
• Deliver scalable, reliable and performant front-end solutions
• Own CI/CD, automated testing and releases
• Collaborate closely with POs, UX/UI and backend teams
• Coach on testing, release methods and coding standards

Tech stack: Flutter, Patrol, Firestore, GCP (Pub/Sub, Cloud Functions), GitHub, Linear, Miro, ShapeUp

Your profile:

• Proven track record building, releasing and maintaining Flutter apps
• Clean code, TDD, continuous delivery
• Native UI/UX guidelines, API & database integration
• Confident in remote-async cross-functional teams
• Fluent English; German a plus

Nice-to-have: TypeScript, Ruby, web dev, backend/frontend/infrastructure experience, GCP/DevOps, API design, climate-tech background

We offer:

• Direct impact on the energy transition
• Remote (Germany-wide) or in our Hamburg, Berlin, Munich offices
• EGYM Wellpass, job-bike leasing, Futurebens perks
• Flat hierarchies, fast decisions, strong scale-up network