Last summer, Boston-based Where, which runs a mobile ad network and location-based recommendation service, opened a development center in Croatia to supplement its 18-person U.S. mobile engineering staff.

WSJ: Mobile App Talent Pool Is Shallow

It recently bought control of Croatia's largest telephone company and is buying out its partners in a Czech mobile venture.

ECONOMIST: The world beyond Deutsche Telekom

At 47, he has worked as an executive at RAM Mobile Data in the U.K. and run telecom companies in Pakistan, Poland and Croatia.

FORBES: A New Calling