Jim Prosser, a Twitter and Google veteran, has signed on at Edelman as managing director-corporate affairs & advisory services for the US western region.
Based in San Francisco, he will handle corporate strategy, narrative and reputation when he joins the No. 1 independent firm on Jan. 20.
At Twitter, Prosser headed corporate, revenue and policy communications during a four-year run. He guided the platform through its IPO and handled the high-profile return of co-founder Jack Dorsey to the helm.
Earlier, he served as manager of communications and public affairs at Google, dealing with financial, intellectual property and global litigation.
More recently, Prosser was head of communications and public policy as SoFi, consumer financial technology firm. He exited SoFi in August following a three-year stint and has been consulting private and public companies.
Jim O'Leary, Edelman's corporate affairs & advisory services chair, said Prosser is "widely respected in the world of communications as someone who pairs forward-thinking with decisive action."