Jan Koum

About

Ukraine-American developer who co-founded WhatsApp in 2009. In 2014 he entered the Forbes list of the 400 richest Americans, with an estimated worth of over $7.2 billion. 

Before Fame

He studied at San Jose State University, but left before graduation after being hired by Yahoo! as an infrastructure engineer.

Trivia

In 2014 Facebook acquired WhatsApp for $19 billion. 

Family Life

He moved to America in 1992 with his mother and grandmother. His father planned to join them, but passed away in the Ukraine in 1997. 

Associated With

In 1996 he was a member of hacking group w00w00 with Napster founder Shawn Fanning.