Mark is a co-founder of TellApart. Leading up to co-founding TellApart Mark was an Entrepreneur in Residence at Greylock Partners. Prior to this, Mark was a Senior Software Engineer for four years at Google, where he started and led several high profile projects including the Android Market, the AdWords API, and natural language processing improvements within the core Search Quality team. Android later won the Founders’ Award, Google’s most prestigious project honor.
David was CEO of DoubleClick when Google outbid AOL, Yahoo and Microsoft to purchase DoubleClick for $3.1 billion. Following the purchase of DoubleClick by Google, David served as the President of Display Advertising at Google. David now serves as Executive Chairman of Group Commerce and sits on the board at Twitter.