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Senior Firmware Developer (m/f/d)


Job description


Welcome to the world of Zoi. We build the digital evolution of our enterprise customers, closing the gap between enterprise IT and new technologies. Zoi strives to bring the cloud to the Retail and Manufacturing industries with innovative solutions that deliver real value.

We are expanding our remote teams in Germany. Just choose your favorite Zoi city! Travel between our locations is possible.


  • Develop firmware for connected IoT devices
  • Support our clients from the initial project idea to completion
  • Work with interdisciplinary project teams to determine the requirements for developing firmware and then implementing them
  • In close coordination with hardware developers, determine the hardware required for product development
  • Create software system architectures and documentation
  • Create test plans and conduct tests
  • Optimize firmware development by implementing best practices and introducing new technologies
  • Create technical documentation


  • You have completed a degree in computer science, software engineering, or a similar field
  • Several years of professional and project experience in firmware development
  • Several years of experience in creating software system architectures and documentation
  • Experience in firmware development for connected IoT devices
  • Knowledge of the application of requirement engineering and agile project management
  • Ability to work in a team and interest in working with a dynamic team
  • Good experience in programming microcontrollers with C++/C
  • Good knowledge in software testing and test automation
  • Fluent in German and good English skills in writing

Job requirements

Do you like to be surrounded by brilliant minds? Awesome. At Zoi, you become part of our community of tech enthusiasts and develop your full potential. Create fresh ideas and shape the digital transformation of our enterprise customers sustainably.

  • GOOD WORK SHOULD BE REWARDED - which is why we offer various bonus models at our company
  • TIME IS WISDOM - 20 % of your working time is available for experimenting and education

  • SKILL YOURSELF UP - Zoi can only be as good as you are. That’s why we value constant training and development

  • BE FREE - thanks to our absolutely flexible working hours and work remotely from any of our locations
  • DEVELOP YOURSELF - with our individual certification and training plan
  • FAMILY COMES FIRST - rely on our financial support for childcare
  • REFUEL - at our regular free Friday lunch

Zoi is an equal opportunity employer, we're committed to helping you do your best work. Our promise is to champion diversity, build an inclusive culture and do our part to create a more equitable professional landscape.