We are a Green-Tech company committed to making the energy industry more sustainable. With us, you’ll actively participate in the world of decentralized and renewable energies. Our mission is to advance the energy transition, and we do this with passion and innovation.
At Lumenaza, we uphold clear principles: sustainability, diversity, and collaboration. Our diverse team takes pride in promoting women in the tech industry.
We provide in-depth training in energy market processes, granting you a solid foundation. Additionally, you’ll gain access to an exciting and future-proof industry. We recognize the complexities of the energy market, which is why we prioritize active knowledge sharing. Regardless of your prior industry experience, we’re committed to ensuring your successful start.
We aim to continue our sustainable growth and are looking for you as a Mid/Senior Python/React Developer in Berlin (m/f/d).In the "Billing" team, you'll work on our dynamic billing platform to promote renewable energy and transform the energy industry. You'll design innovative solutions and contribute to the structuring, design, and implementation of new billing systems that support internal processes and our customers.
Develop code that matters: You will develop software solutions that are essential for our customers in the billing and accounting sectors.
Design innovative systems: You will work on developing new billing systems, tariff models, and marketing strategies from planning to implementation.
Optimize our tools: You will update our back-office tool with React to more efficiently present billing data and assist our finance team and customer support with inquiries. Updating our invoice documents with HTML is also part of your responsibilities.
Collaborate within the team: Working closely with team colleagues, sharing experiences, and finding solutions together play a significant role for us.
Identify and share current trends: You will follow the latest developments in software design and share these insights with the team.Do you want to shape the energy industry? We are looking for enthusiasm for sustainability, not perfection. Diversity and willingness to learn count. Apply and shape the future with us.
You have solid knowledge of object-oriented programming with Python3 and experience with Django ORM and React. Additional experience with automated quality assurance and microservices is welcome.
You stand out with your technical expertise and willingness to collaborate within a team. Basic English skills are essential for us, and German proficiency is an additional advantage. Above all, we value your ability to contribute to our shared success with your specialized knowledge.

Our tech stack includes current technologies such as Django, PostgreSQL, Elasticsearch, Docker, GitLab CI/CD, React, and Kubernetes.

At Lumenaza, you will be part of a dedicated team of over 50 employees, including more than 25 developers. Within our motivated Billing team, which currently consists of 7 developers including you, you are not just another member but a valued part of our strength. We value different perspectives and encourage active exchange and joint learning to grow together.At Lumenaza, you can expect not only unique benefits but also a culture of support and development:
Comprehensive onboarding and further training: New team members are significantly supported through targeted training programs so that skills can be continuously expanded.
Flexibility for a better work-life balance: Benefit from flexible working hours and the possibility to work from home part-time to optimally balance work and private life.
Attractive additional benefits: Fair pay is a basic requirement for us. In addition, we offer attractive additional benefits, such as a discounted electricity tariff and a reduced Germany ticket.
Modern working environment: Our office in Berlin Kreuzberg offers an inspiring work atmosphere that promotes creativity and productivity.
Innovation at the forefront of the energy transition: Be part of our team working at the forefront of energy innovation and help revolutionize the industry.