I work as a software engineer in Silicon Valley and I like rock climbing. Let's catch up sometime :-)
Most of the pages here other than the contact information date to before 2005.
My name also pops up on the net as “Hein Rohrig.” The correct spelling of my name is “Hein Röhrig.” Write “Hein Roehrig” if you can't or don't want to produce the umlaut. The same holds for Ute Röhrig or Ute Roehrig.