Helena Snowdon was named marketing director for Maxus Worldwide. Most recently she was global head of marketing and communications for PHD in London.

MEC named Cheryl Di Martino, Mason Franklin, Michelle Gugliemelli and Adam Shlacther as managing partners.

BBDO hired Jeff Kenyon as executive vice president, group planning director on AT&T. He was most recently a group planning director at Ogilvy & Mather New York.

Brokaw promoted Steve McKeown to creative director.

Thurston Yates joined JWT's Atlanta office as senior partner, digital/group creative director. Yates joins the agency from LBi Atlanta, where he served as senior vice president/executive creative director.

MSG Media hired Marc Forest as vice president of programming and development. Previously, Forest was a vice president and general manager at IMG Media.

Andrew Christou joined Publicis Seattle as executive creative director. Christou joins the agency from Saatchi & Saatchi Los Angeles, where he was creative director.

Chad Harris was promoted to senior vice president, integrated marketing and new media for Hallmark Channels.

G2 promoted Michael Dennelly to group director, digital strategy. Previously, Dennelly served as a lead strategic planner for the Relationship Marketing practice of G2 USA.

R&R Partners named Peter O'Neill as corporate director of public relations. Prior to R&R, O'Neill served as senior vice president of public & community relations for the Nevada operations of UnitedHealthcare.