Fullstack Developer (m/f/d)

Digitalization and the energy transition in one sentence? Yes, at Green Fusion!

With our software for optimized control of heating systems in residential buildings, we actively combat climate change. By digitalizing and automating control processes, we not only reduce emissions but also lower energy consumption — actively driving the energy transition forward.

As a Fullstack Developer, you’ll become part of our Platforms Team and help bring our product vision to life: "Emitting less, gaining more: Transform residential buildings into auto-optimising, CO2-neutral assets."

You’ll play a key role in the development of our software and take responsibility for implementing feature requests. In your day-to-day work, you:

• Write software by implementing features and changes end-to-end — from the database model to the backend and frontend.


• Collaborate closely with your team to understand the underlying problems and requirements.


• Contribute to team planning by helping define tasks, set priorities, and estimate timelines.

• You have at least 3 years of experience in software development.


• You bring a fullstack mindset and are curious about (or open to learning) software infrastructure and operations.


• You’ve worked with React.


• You know how to design and implement RESTful backend services.


• You write clean, high-quality, production-ready code.


• You are able to take responsibility and work in direct collaboration with other engineers.


• You think in a structured way and solve problems methodically.


• You communicate clearly and effectively.


• You’re fluent in English.

Bringing experience in the following areas would be a plus:

• Experience with TypeScript.


• Knowledge of relational databases.


• Experience with AWS.

🏠 Flexible working hours, home office, and up to 2 months of remote work possible.

💡 Diverse opportunities for professional development – whether through exciting challenges on the job, our open feedback culture, or funded training programs – there are always opportunities to learn and grow.

💼 Employee benefits like Urban Sports Club or Become1.

🌱 Direct impact through your job – with us, you can actively contribute to the energy transition and fight climate change every day.

💚 We value our team – that's why regular team events are especially important to us.

🙌 The best team Berlin has to offer – and maybe even beyond. Don’t believe it? Then find out for yourself and apply now!

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While we’re still seen as pioneers today, with you on board, we’ll soon be leading the market—first in the DACH region, then all across Europe.

You can look forward to a motivated, open-minded, and dynamic environment, driven by passion and ambition to actively shape the energy transition!

We’re excited to hear from you — Fernanda will reach out to you.