Deutsch Los Angeles hired Bud Caddell as invention strategist. Caddell, who most recently helped to launch Common, will be working across all accounts at Deutsch.

Deutsch New York hired Jason Clement as senior vice president, group planning director, innovations and digital, and Robert Swartz as senior vice president, group planning director on the Microsoft business. Clement comes to Deutsch from Wieden+Kennedy New York where he was director of emerging platforms. Swartz most recently served as worldwide group account director for IBM at Ogilvy's New York office.

SapientNitro hired David R. Mitchell as vice president, creative in the Chicago office. Mitchell joins SapientNitro from Digitas in Chicago where he was senior vice president and executive creative director.

Mozes hired Amanda Van Nuys as vice president of marketing.

TRIS3CT hired Chris Cancilla as executive creative director. He joins the agency from Y&R Chicago where he was senior vice president, group creative director responsible for Sears, Hilton Hotels, Dave & Buster's and The American Red Cross.

Paul Reardon has been appointed executive creative director for Whybin/TBWA/Melbourne. Reardon joins the agency from Clemenger BBDO Melbourne, where he spent the last five years producing campaigns for brands such as Mercedes-Benz, Snickers, HBA Health Insurance, RACV, Hard Yakka, Fat Yak Pale Ale, Strongbow, Dulux, M&Ms and Corona.

Robert Howell has returned to ignition, serving as vice president.

MEC North America named Jitka Petrickova as managing director, digital west. Previously, Petrickova was managing director at Starcom MediaVest.

Critical Mass named John McLaughlin as chief operating officer and Scott Ross as senior vice president, executive technology director.

Mothership has named Scott Gemmell as head of production. Gemmell was formerly head of production at Motion Theory.