Undertone hired Sal Candela as vice president, mobile strategic sales.

IFC promoted Sarah Takenaga to vice president, public relations, up from director.

MEC hired Carl Fremont as its global chief digital officer. Fremont was previously executive vice president, global media director at Digitas.

Wexley School for Girls hired Cassidy Wilber as senior planner and Sean Hamilton as designer.

Emily Dowal has joined Mobile Theory Boston as sales director.

Twist hired Alissa Liebert as associate producer.

MOcean hired Robert “Bobby” Gumm as vice president of music.

RAPP promoted Zihla Salinas to chief marketing officer.

Big Spaceship promoted Ranae Heuer to managing director, a new position at the agency.

Harrison and Star created a Strategic Planning Group by consolidating several in-house departments. Brian Robinson, executive vice president and chief strategy officer, will lead the new group.