Jason Lewthwaite’s previous role was head of international business at the Bank of New Zealand.
Youngman has built deep expertise in global funds management, corporate strategy, and international financial services.
Lisa Tai’s appointment follows the departure of long-serving CEO Wayne Howett.
Catherine Shipton has acted on most of the country’s public-private partnerships to date.
Adam Reid will join as managing director and head of resources in Australia.
Debbie Eyre will take up the COO role in February.
Mike Siermans has been the organisation’s interim CEO since September last year.
Alice Mew joins Craigs from the NZ Superannuation Fund, where she most recently served as director, external investments and partnerships.
Willie Wiese leaves Alliance after eight years, including almost three years as chief executive.
Appointment comes as the company reports a record first quarter, following its strongest financial year to date, with revenue up 37% to $53.5m