Arnold Worldwide announced that Elizabeth Coveney will be joining the agency as managing partner and executive director to lead the McDonald’s business. She comes to Arnold from Coca-Cola North America where she was vice president of national accounts in the Foodservice Division.

JWT named Michael Byrne as chief financial officer of its New York office. Most recently, he served as chief financial officer of McCann Erickson New York.

LiveRail hired Marc Gaccione as executive director of publisher services; Ward Flock as senior director, publisher development; and Christine Pereira as senior director of demand services.

Twelvefold Media named Jenny Brodowsky as vice president of sales, east.

Jumptap hired Matt Mulderink as director of retail.

Austin based independent agency, Proof Advertising has added Scott Staab as digital creative director and Rob Story as associate creative director.

The Martin Agency promoted Joe Alexander to executive creative director.

TRIS3CT announced that Javier Osorio joined the agency as creative director on the Kimberly-Clark business.

DISH Media Sales promoted Adam Gaynor to director, advertising sales.

GlobalHue promoted Maria Lopez-Knowles to president of GH Latino, Vida Cornelious to chief creative officer, and Michael Jacobs to chief digital officer.