Hire Me


I have a passion for excellence and my goal is to create high-quality products and experiences. Something that "just works" is not good enough for me. Therefore an important part of my work is the product design process. This involves supporting you with the specification of use cases and the design of the application flow through mockups and rapid prototyping. This will help us to focus on the right ideas and to get user feedback already at a very early state of the development process.


I'm specialized in the following areas

  • iPhone & iPad Development
  • Android Development
  • User Interface (UI), Interaction (IxD) & User Experience (UX) Design
  • Application-flow Mockups
  • Rapid Prototyping of Interfaces
  • Development of custom-build UI Widgets
  • Location-aware Applications
  • Social Integration (Facebook, Twitter, Google+)
  • Backend & Database Development
  • Mobile Analytics & Ad Campaigns

I have also some knowledge on

  • Web Development: Ruby on Rails, HTML5, CSS3 and JavaScript
  • Desktop Software Development for Mac OS X

But I'm not

  • a Graphic Designer or Illustrator
  • and I'm not really interested in dealing with bureaucracy or other big company issues

If there is anything you need, that is not mentioned above, please don't hesitate to ask me. I might be able to do it or know someone who can help out.


Check out my CV for previous projects and for a more detailed description about my skill set. Also have a look what other people say about me.


I'm based in Barcelona, but typically work for clients in Germany, UK and USA. Best is to contact me via e-mail at sk@geekmind.net. I speak fluent English and German, but can also work in Spanish if needed.

I can work in one-man projects, but as well support your existing team on a freelance basis or access my network of professionals to help you solve your challenges by putting together a team of high-quality individuals.