Steve Street joined SS+K as a senior copywriter.

Keith Winter joined Opera Mediaworks as chief operating officer.

Cohn & Wolfe hired Paul Baeyaert as managing director, Paris.

WORKS ADV promoted Kaesha Fluegeman to vice president.

Advantage International added three to its Los Angeles office: Jared Blitz as creative director; Ryan Bemis as account manager; and Annie Kineavy as account executive.

Ben Silverman was named chairman and co-chief executive officer of Propagate Content.

Santy hired Carlos Pastor as account supervisor and Carrie Ellingson as traffic manager.

LotLinx named Mark Boyd as vice chairman, chief revenue officer.

RadiumOne named Ann Piper and Brad Walsh as vice president of west sales and east sales and Rekha Ravindra as vice president of marketing.

Ubimo named Rebecca Moyer as vice president of client success.