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Having a global team of 15,000 colleagues and more than 70 nationalities. And enabling many of them to work flexibly when needed.
Both count. Both are us.

(Junior) Java Developer (m/f/d) - IoT


  • Your task as part of a Scrum team is the development and operation of our IoT backend based on Java Microservices and Serverless Functions in the cloud
  • You will design and develop interfaces to work with other systems
  • Using your Terraform (DevOps) expertise, you will evaluate and maintain infrastructure components
  • Working with the latest technology stacks such as Kubernetes (AKS), Stream Processing, Apache Kafka, MongoDB, Okta and CI/CD (Azure DevOps, Azure Functions, Bitbucket, etc.) will allow you to unleash your talents


  • You have ideally gathered (first) project-related experience in companies, universities or open source communities
  • You have ideally already proven your technical skills and comprehensive knowledge of modern development methods and tools as well as continuous integration and automated testing 
  • Thanks to your Scrum experience in an agile project environment, Scrum is an integral part of your DNA
  • You are interested in constantly learning, improving yourself and your team, developing beyond your usual subject areas and driving our digital future with teamwork and intercultural skills
  • Your good English language skills your open and trustworthy personality help you communicate confidently on all levels; a good German level is highly appreciated 


  • Continous Growth: Individual growth and learning is part of our DNA. Our colleagues receive specific training to make the most of their potential and grow as a person.
  • Come as you are: We want to get to know the real you. We welcome everyone and celebrate diversity.
  • Passion: Like our heating systems, we are burning for what we do! We question the status quo – and are always searching for creative solutions in our quest into a more sustainable world.
  • Family: We offer flexible working hours and home office so that you can bring family and career together. We also welcome your young kids to our corporate kindergarten and daycare center Hoppelhasen in Remscheid. 
  • Technology: We work with the state-of-the-art technology and strive for innovation 


Svetlina Klose

+492191 18 2582

Company:  Vaillant Group Business Services GmbH
City:  Remscheid
Country:  Germany

The Vaillant Group is a global market and technology leader in the fields of heating, ventilation and air-conditioning technology. Join our team of 15,000 colleagues from more than 70 countries who work every day for a better climate – for people at home and the environment. We work on large-scale, innovative and strategic projects. With small, everyday gestures so that we can all play our part. Act global, work global. And become part of a global team. We sell our products in around 60 countries, using ten production and development sites in six European countries, as well as China.

Working for us makes you responsible for the future – your own, and that of our planet. We can offer you excellent conditions.


Apply now »
Since we work climate-neutrally, we can only process online applications. Let's save the climate together and avoid paper applications.