Juliet Peterson will take up the role from September 1.
Former Warehouse Group chief customer and sales officer Jonathan Waecker starts next week.
Alicia Murray brings deep litigation and competition law expertise.
Mark Abbot’s appointment follows 14 months as interim chief executive.
Rob McDonald will take over as chair from September 1.
Chris Teeling will lead Arlo’s ambitious global expansion strategy.
Barclay stepped down from his Meridian CEO position in June and is currently on the boards of Air NZ and Chorus.
Kady Buchanan was most recently a senior relationship manager at Nikko Asset Management in Auckland.
Alastair Scott and Rebecca Thomas will join the NZ-owned bank next month.
He will replace Michele Embling, who is stepping down after six years in the role.