Senior Backend Engineer (d/f/m)

About radiosphere

We build the full-stack streaming and publishing suite enabling radio stations worldwide to address and deeply engage their audiences digitally and build a future-proof business. Founded as a corporate start-up of the radio station FluxFM, radiosphere GmbH has been developing an all-in-one audio software for the growing streaming market since 2019.

At radiosphere, we are working in cross-functional teams consisting of backend, mobile, audio processing and analytics developers, using various modern tech stacks. Cross-domain knowledge is highly appreciated but not a requirement.

We are based in the heart of Kreuzberg, Berlin but have a flexible, remote-friendly culture. Diversity and open expression are fundamental to our company. You will work together with a team of dynamic, creative and highly motivated people in a surrounding where you can improve and challenge yourself.


As part of our team, your mission is to build real-time services for millions of radio listeners worldwide.


  • You implemented features allowing us to bring radio to the next level with highly-scalable code quality and architecture

  • You developed and improved our CI/CD Pipeline in close collaboration with our Backend Lead Engineer

  • You put your skills to the test, have grown and learned rapidly in the process


  • MSc in Computer Science or related (engineering/mathematics /IT) and/or comparable experience in IT projects

  • Software engineering is your passion

  • Experience in working with java and kotlin based microservice architecture running on a Kubernetes cluster.

  • Experience in deployment with databases like PostgreSQL, Cassandra, Elasticsearch, and Druid

  • Master multiple languages and used various development paradigms throughout your career

  • Databases are not only black boxes for you

  • Experience in real-time and distributed systems is highly advantageous

  • Know how to test your software, but also when it’s necessary

  • Team player with a clear communication style

  • Thinking outside the box

  • Drive to actively shape projects with your creative ideas

What you get

  • Become part of the success story of a dynamic, fast-growing company in a key creative industry

  • Make a true impact on the radio and media industry

  • Competitive compensation with fixed and variable components

  • A trusting working atmosphere, independent areas of responsibility and regular, constructive feedback

  • Central location in Xberg

  • Rooftop terrace & BBQ

  • Guest list for access to concerts

  • Bergfest on Wednesday at FluxFM

  • Free boat license at FluxAhoi

  • Flexible working hours

  • Remote friendly culture

Join us now

We are looking forward to reveiving your application. Just send us your resume, earliest start date and salary expectations.

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