Republica hired Enrique Dussan as vice president of media services. Previously, Dussan was vice president/director of communications planning at Wing/Grey Global.

R/GA hired Steve Weinswig as vice president, managing director to lead the San Francisco office. He was most recently general manager of frog design San Francisco.

Zimmerman Advertising hired Ryan Linder as executive vice president, chief marketing officer. In addition, Adam Herman was named executive vice president, integrated media services; Bruce Himelstein will head a new Hospitality, Travel and Tourism group for the agency; and Peter Twombly will serve as head of global business development and marketing.

Leo Burnett Worldwide hired Mark Moll as senior vice president, creative director.

The VIA Agency named Jason Lucas as group creative director, digital. Lucas comes to VIA from BBDO New York, where he was the senior creative director working on FedEx and Mars.

Optimedia tapped Keith Mackay as president of strategy. Mackay will relocate from the agency’s Seattle office to New York. Most recently, Mackay was executive vice president, managing director for Optimedia’s Seattle and San Francisco offices.

Lars Bastholm was named chief creative officer of the newly branded Cheil USA. He joins Cheil USA following two years as chief digital officer at Ogilvy North America.

Mullen hired Sean Corcoran as senior vice president, director of digital media and social influence. Corcoran was most recently senior analyst for interactive marketing at Forrester Research.

iCrossing hired Patrick Stern as chief creative officer. Prior to iCrossing, he served as vice president, executive creative director at R/GA, where he managed the agency's Walmart account.

My Damn Channel hired Melissa Schneider as director of production.