Foursquare Biz Dev Tristan Walker Checks Out, Heads to Andreessen Horowitz

Foursquare employee Tristan Walker announced on Wednesday that he’ll be leaving the social check-in start-up for a gig at Andreessen Horowitz, where his new title will be Entrepreneur in Residence. Walker leaves Foursquare after two-and-a-half years as VP of Business Development, and was one of the company’s earliest employees.