22squared named Matthew Zaifert as creative director.

Target Data hired Michael Mathias as chief strategy officer.

Bloomberg Media named Michelle Lynn as global head of data science and insights.

Roddy Swearngin joined Art19 as executive vice president, content.

Idea Hall tapped TJ Bennett as executive creative director.

Telemundo promoted Angel Domenech to vice president of creative strategy.

Wire Stone tapped Jason Michaels as vice president and managing director of the company’s California operations.

Theorem promoted Bhaskar Kalale to senior vice president.

4C hired Anupam Gupta as chief product officer.

MBMG promoted Christine Williams to associate director, digital and hired Jenna Saulnier as associate strategist.