PR agency Ogilvy PR has appointed a new head of influencer marketing: Rahul Titus.

He joins the company from management firm James Grant Group, where he was director of social talent. Before that, he spent nearly three years as head of influencer marketing at MediaCom.

"In a world where celebrity influencers can command six figure sums, often with debatable business impact; it has never been more important to define a new, strategic approach to influencer marketing," said Titus in a statement.

Top of his priorities will be A.D.A.M., which is Ogilvy's benchmarking tool for influencers and campaigns, which the agency is using for its clients.

"I am thrilled to be joining Ogilvy at such an exciting time and help build on the strong foundation we have in place here at the agency. A.D.A.M. is an example of this new scientific approach that will help us redefine this space," said Titus.