Mark Ayzenshtat

Former Entrepreneur in Residence



Mark is a former EIR at Greylock Partners. In that role, he co-founded TellApart, a predictive customer analytics company, where he currently serves as CTO. TellApart helps e-commerce companies manage and harness the power of customer data to massively enhance their online marketing.

Previously, Mark was a Senior Software Engineer 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. Today, the AdWords API is the world's largest commercial API and interacts with well over half of Google's total revenue; it went on to win the Executive Management Group award. Android later won the Founders' Award, Google's most prestigious project honor.