JWT announced that Christophe Cauvy has joined the agency as European head of digital & innovation of JWT London. Cauvy joins JWT from Momentum Worldwide, where he was senior vice president & regional director of innovation for EMEA.

Lotta Brugge joined Perfect Fools as head of production.

Laura Petasnick was named vice president of integrated sales for Martha Stewart Living. Prior to MSLO, Petasnick was at Rodale, where she served as publisher of Prevention and Prevention.com.

MEC hired Sharona Sankar-King as senior partner, director of digital analytics.

AT&T AdWorks has appointed David Polinchock as director of the AT&T AdWorks Lab in New York.

Sigma Group hired Gregg O’Neill as executive creative director.

David Rollo, most recently senior vice president, director of digital & social media strategy at 22squared, joined BLiNQ Media as chief strategy officer.

Rocket Fuel hired Eric Porres as chief marketing officer. He previously served as chief marketing officer of Lotame Solutions.

Time Inc. named Teri Everett as executive vice president of corporate communications.

Cactus hired Brooke Warren as senior broadcast producer on all accounts. Previously Warren was senior integrated content producer at The Integer Group, Denver.