Simply Hired named Chander Sarna as senior vice president of engineering.

Ron Thompson and Quan Hoang joined HZDG as creative director and interactive creative director, respectively.

22squared promoted John Stapleton to chief creative officer.

Richard Mellor joined [24]7 as managing director, international and Peter Domjen was promoted to managing director, Australia.

Andi Poch was named senior vice president, sales, CBS Local Digital Media.

IBT Media hired Arbell Noach as vice president, director of social media.

Derek Clark joined VML as a group creative director and copywriter; Andy Clark as executive creative director; and Shane Alderton rejoined VML West in Seattle as a group creative director.

David Gee joined Zuora as chief marketing officer.

AMP Agency hired Doug Grumet as senior vice president, media; Chris Boucher as senior vice president, advertising technology; and Elizabeth Chapin as director of social.

Ignition hired Jeff Holman as senior art director.