Employed by Facebook from: December 2004 - July 2010
Position at Facebook: Manager of Internal Communications, Product Manager
Where he is now: According to his LinkedIn page, Callahan is living in the Los Angeles area. He hasn't listed any new jobs since his Facebook employment. But a few years ago, he decided to invest in a Palm Springs hotel after he noticed millennials flocking there. The Examiner wrote about his plans then: "[Callahan] and his architect Chris Pardo unveiled their plans for a hip, new hotel and restaurant at 1551 N. Palm Canyon, between Vista Chino and Stevens. Their 32-room contemporary hotel, called 'ARRIVE,' is significant because it will anchor the north end of the Uptown Design District – itself a major hit that has seen one restaurant and retailer after another splash new life onto the Desert scene."