I’m a Cologne/Bonn-based freelance software-developer with tons of backend and a fair amount of frontend experience. In the past years I’ve worked mainly in the online-payment sector for international companies.


  • German (native) / English (like an IT guy)
  • Finisher
  • Team player
  • Secure coding
  • Building frameworks, APIs, generic code and keeping things simple
  • I like scrum

My tech-stack

  • Modern Java (10+ years)
  • Spring/-boot/-data/-security/etc (10+ years)
  • SQL (20+ years)
  • Docker
  • Concourse CI
  • Modern JavaScript (the good parts) (4+ years)
  • React Web
  • EmberJS (3+ years)
  • GWT (3+ years)
  • iOS/Objectiv-C (2+ years)
  • C/C++/Delphi/Basic/Assembler in past life
  • I have absolutely no knowledge of PHP


I’ve worked in projects for Aixigo, BMW, ClickandBuy, Draeger, Ford, PayCo, PayU, Trimplement, Vaillant, some banks and insurance companies.