Senior Software Engineer (Backend) (m/w/d) - Power Market Processes
Lumenaza GmbHBerlin, Germany
Posted September 13, 2025
Full Time
About the Company
Lumenaza GmbH is a Berlin-based company specializing in digitalizing the energy transition through its SaaS platform. Since 2013, Lumenaza has transformed companies into electricity aggregators and suppliers, offering end-to-end solutions for billing, CRM, customer communication, and more. The company serves energy suppliers, aggregators, and new market players, including Octopus Energy and EnBW, and provides green, dynamic electricity tariffs under the LUOX Energy brand.
Job Description
Lumenaza is a green-tech company focused on sustainably advancing the energy industry. They are seeking a Senior Software Engineer to join their backend team, focusing on automated communication between businesses and processes. The role involves designing complex systems, solving technical challenges, and contributing to the team's overall development.
Requirements
- Completed education in (Economics) or a comparable qualification
- More than 2 years of experience as a backend software engineer
- Very good knowledge of Python as well as Django
- Foundational experience with the Django REST Framework
- Practical experience in designing, developing and integrating REST APIs
- Experience with microservices architectures and distributed systems
- Routine in dealing with legacy systems and their modernization
- Passion for clean code, automation and Continuous Integration/Delivery
- Excellent communication skills in German and English
- Knowledge of Celery and asynchronous programming
- Practical experience with Postgres, Redis and Object Storage (e.g. S3)
- Secure handling of Git
Benefits
- Comprehensive onboarding and training
- Flexibility for a better work-life balance
- Attractive benefits such as a discounted electricity tariff and an intermediate Germany card
- Modern workplace
- Innovation at the forefront of the energy transition
