Univision Communications named Shari Post as vice president of sales.

AMF Media Group named Geoff McGann as executive creative director.

The Brandon Agency hired Kelly Marrs as project manager and John-David Withrow as associate SEM media director.

Publicis Groupe named Michel Marques as vice president of compensation & benefits.

Proximity Worldwide named Reza Ghaem-Maghami as global chief strategy officer, based in Paris. In this position, Ghaem-Maghami will work with global clients to develop their data-driven strategies, as well as with local Proximity offices to help shape the network's strategic positioning. Most recently, he was president of OgilvyOne and Geometry Global France. Prior to that, he was chief data officer of Proximity Worldwide. "Proximity's heritage is in direct, data and digital. Reza's expertise in these areas, together with his global experience and deep knowledge of the adtech and performance media landscape make him the perfect candidate for the role," said …

Jack Morton Worldwide hired Rachel Donovan as senior vice president, executive creative director, based in New York. She previously served as global creative director at McCann Health. Prior to that, she worked at Spike DDB, Sapient Nitro, UniWorld, Publicis and Havas Worldwide. Donovan began her career as an art director at BBDO. Her former clients include Pepsi, Chevrolet, Cadillac, Reckitt Benckiser, Novartis, HBO, GE, AT&T, Target, Time Warner Cable, Colgate, Dove, Match.com and Airbnb. "As executive creative director in New York and a member of our global creative council, Rachel will have an instrumental role in the creative direction of …

Momentum Worldwide named Abbie Baehr as senior vice president, director of strategy, North America. She will be based in New York, reporting to Elena Klau, senior vice president, global director of strategy, insights and performance at Momentum. Baehr rejoins Momentum following her role as senior vice president, head of strategy for Jack Morton NYC. While there, she was charged with re-invigorating the agency's positioning, philosophy and overall creative strategy offerings. Prior to that, Baehr was Momentum's North American strategic lead on Coca-Cola, working with McCann Worldgroup partners to help redefine the brand's global strategy. "Abbie is a rare, bold talent …

Cristina "Tin" Sanchez joined DigitasLBi as senior vice president, group creative director for the New York region. Sanchez will serve as creative lead for AstraZeneca and report to Atit Shah, executive vice president, executive creative director, New York and Atlanta. She joins the agency from Ogilvy London. Prior to that, she was executive creative director at BBDO Guerrero, where she created Pantene's "Labels for women," which earned multiple awards. Sanchez also co-created #Unselfie, which was created to raise awareness of the devastation in the Philippines after Typhoon Haiyan. The campaign garnered numerous awards, including two Cannes Lions. "Tin is a …

J. Walter Thompson New York named Sherri Chambers as chief marketing officer, reporting to Lynn Power, CEO, of J. Walter Thompson New York. Chambers joins the agency from The Barbarian Group, where she served as head of account management, working with clients such as GE, Google, IBM, KIND and PepsiCo. Prior to The Barbarian Group, Chambers worked at J. Walter Thompson New York as global business director on the Google account. Before that, she also worked at 72andSunny, StrawberryFrog, Kirshenbaum, Bond & Partners and Goodby, Silverstein & Partners. "Sherri has an incredible drive, a strategic mind and an understanding of …

Nameberry tapped Todd Tarpley to the newly created role of chief operating officer.