Trailer Park Interactive, a division of entertainment-marketing agency Trailer Park, has added Amy Gunzenhauser as director of social media. Gunzenhauser will lead TPI’s social media team, shepherding initiatives from concept to implementation. She’ll report directly to Michael Faulkner, the unit’s VP, Interactive Accounts.Gunzenhauser’s experience includes work at Reelzchannel launching fan promotions, and at FEARnet implementing social media strategy for cult web series. TPI’s current projects include social content for Warner Bros.’ “Harry Potter and the Deathly Hallows,” social media management for all AMC shows on hiatus, including “Mad Men,” and social media for DreamWorks’ “I Am Number Four” and “Fright Night.” *** Gotham post house Moondog Edit has hired Claudia Reda-Walker as editor and Stephanie Shayne as vp of development. The company also promoted producer Courtney Ryan Law to exec producer. Reda-Walker formerly worked at Rome post house Filmmaster, which has hosted helmers such as Woody Allen, Spike Lee, Ridley Scott and Federico Fellini. Known for fashion and beauty skills, she worked at Moondog in the 90′s and returns to the house following two years at Bond, which closed late last year. Prior to that she spent five years at Rhino Edit. Recent work includes spots for Pantene, Neutrogena and Dolce & Gabbana. Shayne joins Moondog following six years as exec producer at Bond, where she produced spots for Wendy’s, Sprint, Pantene, DirectTV, Cablevision and Tecate beer. Prior to working in post-production she was a line producer and musician. Law joined Moondog as a producer in 2009 and has handled such clients as Victoria’s Secret, Neutrogena and Bath and Bodyworks. She began her career at the L.A. office of post house Cosmo Street as a producer and in 2008 joined Lost Planet. *** ToolsOnAir announced the appointment of Brad Rumler to head up the company’s North American operations. Rumler brings nearly two decades of experience in broadcast and post-production to the position, including seven years as an account exec for Apple.