Citigroup Inc. (C) plans to hire bankers and fill management roles within its Private Bank, continuing its move to a global leadership structure, three months after naming a new chief executive for the unit.

Citi recently formed a joint venture for its Smith Barney brokerage with Morgan Stanley (MS), but retained its Private Bank unit, which provides investing, banking, lending and advice to wealthy clients. Private Bank is now part of Citi's investment-banking business. Now Citi is looking to fill some senior positions at the unit, according to documents reviewed by Dow Jones Newswires.

The banking giant's search includes candidates to fill the following positions: global chief investment officer; global head of managed investments; global head of manager research and due diligence; and U.S. head of investments.

The banking giant is also looking to add two to three dozen private bankers across the U.S. and Canada.

In April, Citi named Jane Fraser as chief executive and Deepak Sharma as chairman of Private Bank. Previously, John Longley was head of Private Bank in the U.S. and Canada. He left Citi in February to join Barclays PLC (BCS).

In its recent second-quarter results, revenue at Private Bank fell 20% to $477 million, due, in part, to lower assets under management.

A Citi spokesman declined to comment on the search, but said Private Bank is "a key growth business of Citigroup, leveraging Citi's global platform to deliver solutions for our clients."

-By Brett Philbin, Dow Jones Newswires; 212-416-2173; brett.philbin@dowjones.com