10+ years experience

Ruby on Rails

Professional Web-Development with

Ruby on Rails

The Ruby on Rails framework makes it easy to developers to write well-tested, maintainable and structured, future-proof code in short release cycles. 10 years in the open world have made Rails a standard.


These days Javascript empowers developers to write modern web applications that just feel like desktop apps. Frameworks like EmberJS and AngularJS guarantee code quality and introduce best practices.

Test driven development

A good test coverage in contrast to manual testing is the key to stable, maintainable software. Automated tests and continous integration ensure the software qualityand are the key for continous deployment.


As most things in life software development is not static, so I'm not. I plan your project with you and your team and develop it step by step. Your plans change meanwhile? No problem. We talk and readjust.

Dirk Holzapfel

I am a seasoned software developer with more than 10 years experience in professional IT business and with a degree in computer science. Throughout my career, I have been a team leader in CTO/CEO positions. I have excellent experience in agile, test-driven development with Ruby on Rails and am familiar with JS frameworks. I am an enthusiastic learner with a keen interest in the complexities, emerging issues, and trends in web and mobile technologies and have an eye for UI/UX. At the moment I am diving into Elixir/Phoenix.


bitcrowd, moviepilot, Liefery, Homify, Krautreporter, MTV, HouseTrip, time:matters, Viacom, aka-aki networks, T-Systems, YogaRaumOnline, atmosfair, dan pearlman, 100fans, helpster,


  • Ruby on Rails
  • Ruby
  • Team-Lead
  • Agile methodologies
  • RSpec
  • Cucumber
  • PhantomJS
  • Capybara
  • Git
  • JavaScript
  • CoffeeScript
  • AngularJS
  • Trello
  • PivotalTracker
  • Scrum
  • Kanban
  • BDD
  • Capistrano

Contact me!