Development Engineer Battery Modules (f/m/d)


Wildpoldsried, BY, DE

Stellen-ID:  2865

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 development engineer to support our dynamic battery development team. You will work together with our battery and BMS hardware specialists on exciting projects related to our proprietary lithium-ion battery modules. Together, we will find creative, pragmatic, yet safe and robust engineering solutions for defined tasks.


What you will do to help drive energy transition


  • You will help develop innovative battery modules as well as build and test new prototypes
  • You will further develop new battery modules in cooperation with suppliers until they are ready for series production
  • You perform design and development related activities
  • You create specifications and requirements for battery modules


What you will need on that journey


  • Completed technical studies like electrical engineering, physics, chemistry or similar fields
  • In-depth knowledge with development and design of battery modules
  • Knowledge of common CAD tools, ideally with SolidWorks
  • Knowledge in cell contacting and thermal simulation
  • Willingness to collaborate in a team, but also the ability to drive your work independently
  • Fluent in English or German

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!