CrowdStar, the fast-growing social game startup behind Happy Aquarium, has hired Niren Hiro, an executive at mobile ad network AdMob as its CEO. Hiro, a former general manager at Yahoo (NSDQ: YHOO), joined AdMob in 2006 and had served as VP of business development at the firm, which is in the process of being sold to Google (NSDQ: GOOG).
Hiro’s hiring comes as several of CrowdStar’s titles have taken off. The company is now the fifth largest Facebook app developer, according to AppData, and the startup has said it plans to more than double its staff by year-end. That growth has attracted interest from investors — and earlier this year Microsoft (NSDQ: MSFT) was reportedly in talks to buy the company.
Hiro doesn’t seem to be replacing one specific executive, with VentureBeat noting that until now CrowdStar has “run itself without a formal organization chart.”