Native Content signed director Tony Franklin for U.S. representation.

Droga5 New York promoted executive producers Jesse Brihn and Bryan Litman to the joint role of co-heads of broadcast production.

John Shelby joined Interactive One as vice president of sales for the Midwest-west region.

Tremor Video has named Calvin Wong as vice president of regional sales east, seller platforms.

Emma named Jeff Middlesworth, formerly the senior director of marketing automation at Salesforce Marketing Cloud, as chief product officer.

The Burnett Collective named Robyn Freye as vice president.

Jonathan Evan Graham was named creative director for B-Reel.

WPP's Geometry Global named Marta LaRock as North America chief strategy officer.

Socialyse, the social media output of the Havas Group, named Olivier Gonzalez as global head of the network. Gonzalez, based in Paris, will be charged with developing campaigns using a combination of strategy, data, content and media. He joins Socialyse following a year as managing director of Havas Forward France. Prior to that, Gonzalez was general manager of Twitter France. "Social media continues to be a vital channel for brands looking to establish meaningful connections with their consumers; they are able to activate and enhance data and insights through content and media," said Gonzalez. "I'm excited to lead a network …

Walrus hired Mel Stern as media communications director, a new position. Stern will be responsible for leading Walrus' newly-launched media department, which will provide media and communications planning to the agency's clients. Prior to Walrus, Stern was a partner at J3/Universal McCann, where he was responsible for leading integrated media planning for Johnson & Johnson brands including Acuvue, Simponi Aria, Invokana, Animas, DePuy-Synthes, and Lifescan. Before that, he served as a brand strategy supervisor at Horizon Media, where he led media strategy for Capital One Finance, Little Caesars, Mohegan Sun, and Ruby Tuesday. Stern began his media planning career at …