Senior Fullstack Software Engineer - Python (f/m/d)


Berlin, BE, DE DE Wildpoldsried, BY, DE

Stellen-ID:  4321

At the earliest date possible we are looking for support for our #teamsonnen

Clean and affordable energy for all is one of the greatest challenges of our time. Sonnen has been committed to this mission since 2010 and is now represented in Europe, the USA and Australia with over 1,000 team members globally. In Germany, our offices are located in the beautiful Wildpoldsried (Allgäu) and the vibrating heart of Berlin Kreuzberg.

At sonnen, we are building the energy system of the future. To this end, we are developing new technologies and business models that have not existed before. Whether intelligent power storage, virtual power plants or digital services - we set the trends of a new energy world. That means, among other things, the inexpensive production and storage of renewable energy and the intelligent networking of producers and consumers. sonnen thereby gives people around the world the opportunity to become independent of fossil fuels and conventional energy supplier.

We are growing steadily and are looking for people who want to join us in our vision of clean and affordable energy for all while making a positive impact on climate change.

We are looking for a Senior Software Engineer - Full-Stack (m/f/d) to join one of our Delivery Platform teams. In this exciting position, you will contribute to a new globally scaled project, which will automate and manage the lifecycle of Sonnen Energy Service products. We work in a remote, cross functional Scrum Team consisting of: scrum master, product owner, software engineers, requirements engineers, and business analysts. We also emphasize a collaborative approach and we are dedicated in fostering a positive and inclusive team culture. 


What you will do to help drive energy transition:


  • Collaborate within your team and across teams to design, implement, test, document and deliver scalable and reliable services for automating business processes

  • Actively contribute to code reviews, ensuring code quality and best practices. 

  • Drive innovation by suggesting and implementing improvements in software development processes, tools, and technologies. 

  • Work closely with domain experts in your team to understand requirements and translate them into technical solutions 

  • Mentor and coach less experienced engineers in your team


What you will need for that journey:   


  • At least 7 years experience building, testing and maintaining cloud-based services with (at least partly) Python, ideally with FastAPI 

  • Proficiency in cloud services such as AWS (e.g., Lambda, S3, RDS, API Gateway, EC2, etc.). 

  • Experience with REST-ful as well as event-based architectures

  • Solid understanding and practical experience with infrastructure-as-code tools like Terraform. 

  • Familiarity with monitoring tools such as Sentry, Datadog and CloudWatch. 

  • Strong knowledge of database systems, particularly PostgreSQL. 

  • Knowledge of CI/CD pipelines and associated tools like Github or GitLab 

  • Hands-on experience with designing scalable and maintainable systems from scratch

  • A strong appreciation for creating high-quality and documented solutions

  • You take an active part in the process of translating business requirements into solutions and are able to explain technical feaibility and limitations to non-technical colleagues.

What you can expect at sonnen:

  • An atmosphere of openness, tolerance and mutual respect, where innovation is expected and encouraged
  • The option of working full- or part-time for every position
  • 30-32 days annual vacation with increasing team membership
  • Leasing of company (e-)bikes with up to 40% discount
  • Flexible working hours and option working mobile
  • Mental health and wellbeing offering for you and your family members
  • Free German, English as well as online yoga and body art courses
  • Soft drinks, fruits and cereals in our offices
  • Use of sports memberships (EGYM Wellpass, only €29.75/month) and discounts for other services and products 
  • Employee discount on our electricity tariff
  • Regular team and company events
  • We love dogs! You too? Feel free to bring your fellow friend to our offices


You feel we are a match? Apply now and help us to shape the energy transition together. We look forward to welcoming you to #teamsonnen!

sonnen - energy is yours!

Stellensegment: Testing, Cloud, Database, Developer, Technology