Alex Rainert is a founder of Dodgeball. Google acquired the company in 2005, and Rainert left in 2007. He then ran a small creative product development shop focusing on experience design & strategy in the mobile, social and emerging tech space called Tinker Studio.. In 2009, he joined former Dodgeball co-founder Dennis Crowley's new. startup, Foursquare as head of product. In late 2013, he left Foursquare. In February 2014 he joined Project Florida as Head of Design.