Mahoney will be based in London and will report to Craig Blackbourn, who was appointed head of Northern Trust’s transition management team in January.
In his new role, Mahoney will focus on transition management services for insurance companies and financial institutions across the EMEA region.
Prior to Northern Trust, Mahoney was at State Street Global Markets, where he was transition manager and portfolio trader.
Blackbourn said: “Michael Mahoney’s appointment underlines our continued commitment to investing in our global transition management business.”
He added: “Northern Trust’s transition management offering is centred around minimising risk and controlling costs alongside maximising transparency for our clients and Mahoney’s extensive experience will be invaluable in delivering exemplary performance throughout the transition management lifecycle.”