(Senior) Java Developer (m/f)

at subsidary 1&1 IONOS SE in Berlin
Reference Id: BE-PrBi-1810083


  • You are responsible for your features and changes from the beginning until release in production.
  • Design, implement and test new components, services and features.
  • Make sure only production ready and clean code enters the code base.
  • Commit to deadlines and be responsible for keeping them.
  • Bring in your experience and ideas to optimizing our algorithm and scalability.
  • Collaborate with other platform teams for implementing their features into the provisioning stack.
  • Work hands-on to help our 3rd level support in case of urgent requests or for early-life-support.
  • Work in a DevOps driven environment where you will contribute to our growing infrastructure.

Your profile

  • Long-term experience in software development with heavy focus on Java-based backend (for senior level minimum of 8-10 years).
  • Solid to extensive knowledge of JEE API´s and being well informed about the current state of the Java ecosystem.
  • You are not afraid of databases, JPQL and SQL.
  • You have a track record to deliver scalable and maintainable solutions in business solution environments.
  • Experience building distributed systems with service-oriented architecture and / or micro services.
  • Passionate about application monitoring, distributed tracing and performance tuning.
  • Comfortable in a DevOps environment and virtualization, configuration management and related technologies.
  • Knowledge about "Clean Code” and being determined to improve on quality all the time.
  • Practical experience in other languages (e.g. node.js, Golang, Python) is a plus.
  • Understanding of build chain management and containerization is a plus.
  • Fluent in English is a must.

These job offers are naturally open to both male and female candidates.


United Internet AG
Zentrales Bewerbermanagement
Ernst-Frey-Straße 10
D-76135 Karlsruhe

Tel: +49 721 91374-6891