We are pioneers

    E3/DC develops and produces intelligent, “all-in-one” storage systems and electric vehicle charging solutions. All components, from inverter and energy management to batteries are developed and integrated by us. This including end-to-end services and cloud-solutions. More than 270 experts work with their ideas, their skills and a lot of commitment to make the world a better place. Our recipe for success: creative freedom and personal responsibility in the projects, maximum customer proximity and concentration on a common goal – to deliver the most sustainable storage and charging solutions to accelerate the distributed energy transition. E3/DC is a brand of HagerEnergy GmbH and part of Hager Group, one of the leading providers of electrical solutions for buildings.


  • Advance our battery monitoring, analytics, and circular economy solutions
  • Develop algorithms to improve battery performance, reliability, and safety
  • Collaborate closely with our embedded and cloud-software developers to scale and automate our algorithms
  • Conduct battery testing and validation protocols to support hardware and software integration of new batteries in upcoming products
  • Optimization of our battery field-data pipeline over the full chain from our portfolio of 100k systems, to the AWS cloud, to our battery monitoring and analytics platform
  • Collaboration and support on strategic topics


  • Background in electrical engineering, computer science, informatics, or similar
  • First-hand experience in the field of battery engineering
  • Good knowledge of C++ and Python/MATLAB
  • Structured and analytics work mode with high pragmatism and getting-things-done attitude
  • Aptitude for interdisciplinary work and willingness to dive into unknown topics
  • Great communicator in German and English
  • Team player and flexible

What we offer

    INSPIRING: high degree of decision-making, the opportunity to contribute own ideas, the same passion – to make the world a better place
    RESPONSIBLE: the opportunity to change things and make decisions, growing together with the company and shaping the future
    GROWTH-ORIENTED: ongoing feedback on projects, access to wide range of education opportunities
    AUTHENTIC: a successful, financially strong premium brand in an innovative environment, proximity to customers, start-up character
    CHERRIES ON TOP: JobBike, company pension, flexible working hours and the possibility of mobile working, parking with free e-charging, modern building, various corporate benefits, experience and strengthen our inspiration at larger or smaller events

E3/DC - Simply better

    We would like to invite all people with their individual background and personality to apply. Are you in? Do you have any questions about the vacancy? Then you can reach Manuela Wessendorf or Elisa Jöhne via +49 541 760 268 0. We look forward to getting to know you.