JPMorgan Chase is hiring Citigroup dealmaker Theodoros Giatrakos as it seeks to bolster its business advising private equity firms. The London-based banker is leaving Citigroup after more than 14 years and is set to join JPMorgan’s financial sponsors group, the people said, asking not to be identified because the information is private. Giatrakos, who joined Citigroup in 2011, was previously head of the firm’s alternative assets group for Europe, the Middle East and Africa. He had earlier led its investment banking team in central and southeast Europe. Late last year, Citigroup hired JPMorgan banker Sidharth Punshi as the new head of its EMEA alternative assets group, with Giatrakos stepping down from the leadership position to dedicate more time to client relationships.