G4S, the world's biggest security firm, has appointed Misys's Himanshu Raja as its new chief financial officer to help drive "improved execution", the company said.
The British firm, which reports its interim results today, has endured a torrid near two years, including an abandoned takeover of Danish cleaning firm ISS, a botched contract to staff the 2012 Olympics and a profit warning in May.
It had been looking for a new finance boss since Ashley Almanza replaced Nick Buckles as chief executive in June, just weeks after joining the firm as CFO.
"The realisation of the company's potential will require strategic focus and improved execution and we will benefit from Himanshu's considerable experience of successfully leading global finance organisations and driving improvements in financial performance and control," Almanza said.
Raja will join G4S on October 7, the company said.
He only joined financial software provider Misys as CFO in February and has held finance roles at Logica and BT Group.
Misys was not available for comment.
Alongside G4S's first-half results, Almanza is expected to outline his strategy for improving the company's finances and reputation.
Almanza is expected to give some details on his strategy for growth, cost savings, and disposals that could help reduce debts of £1.8bn (€2bn). Analysts have said a rights issue is also an option.
G4S is not expected to give full details of Almanza's action plan until October or November, a source familiar with the situation told Reuters last week.