That search will include considering internal applicants and provides "ample time" for an appropriate handover period and smooth transition, he said.
Tower shares were unchanged at 73.5 cents and have gained about 2.5 per cent so far this year. The firm raised about $47.2 million in a renounceable rights offer in October to fund its purchase of the Youi business and to meet revised capital requirements of the Reserve Bank of New Zealand.
Harding said the new platform operating model the firm is shifting to will allow it to be more flexible and test and develop new services for customers quicker.
To support that change, chief information officer Peter Muggleston will take up the new role of chief operating officer. He will be responsible for the firm's claims, underwriting, Pacific and IT business units and will be expected to drive benefits from the firm's IT investment, Harding said.
Muggleston joined Tower a year ago after seven years with Foodstuffs. Prior to that he was chief information officer at Sovereign Insurance.