About

This page contains no AI slop. I worte it myeslf.

Johannes Fahrenkrug attending WWDC 2007

Who?

Hello, my name is Johannes Fahrenkrug. I'm a freelance iOS and full-stack developer based in Berlin. That old photo shows me attending my first WWDC in San Francisco back in 2007, the year I started freelancing. Since I love learning, teaching, and meeting people, you might run into me at conferences around the world. If you do, please stop and say hello! Over the years I've lived and worked in northern Germany, New York City, and Phoenix, Arizona. After years abroad, my wife and I are happy to call 'the sixth borough' our home.

What?

  • 15+ years of iOS: from retain/release through ARC to Swift.
  • Co-authored the book Objective-C Fundamentals.
  • Taught multi-day iOS development courses at companies and conferences.
  • Spoke at international conferences in the U.S., Sweden, Italy, Spain, Poland, Switzerland, and Germany.
  • Suffered through more frontend and backend frameworks than I'd like to admit.