Finkelstein, will manage risk and trade in the hedge fund's global fixed income and macro business in the newly created role, the hedge fund said.
He will also oversee and advise a talent development program at the $56 billion hedge fund for aspiring portfolio managers, Citadel added.
Finkelstein did not immediately return a request for comment.
(Reporting by Nell Mackenzie; Edited by Dhara Ranasinghe)