CORE Media Group has hired Tim Sullivan as SVP, Development and Production. He will work on developing and producing unscripted shows, reporting to CORE’s Head of U.S. Television Jen O’Connell. Sullivan most recently worked at Zodiak USA, where he served as SVP, Head of Development overseeing the creative efforts of the independent production company’s U.S. arm. Before that, Sullivan was a producer on Top Chef Just Desserts and a Director of Development at Magical Elves. Sullivan joins CORE’s growing unscripted roster, which also includes Sharp Entertainment (Extreme Couponing, Doomsday Preppers), which CORE acquired, and Rhett Bachner and Brien Meagher’s B17, in which the company has an ownership stake.