Westpac hires CBA’s Andrew McMullan as chief data, digital and AI officer

Westpac has appointed Andrew McMullan as its new chief data, digital and AI officer, reporting directly to CEO Anthony Miller - a move that signals the bank’s growing focus on customer-centric innovation through data and artificial intelligence.

McMullan joins from Commonwealth Bank, where he served as chief data and analytics officer for close to four years. Prior to that he served as CBA's chief analytics officer. At Westpac, he will be tasked with accelerating digital transformation and a responsible AI strategy, while unifying data, digital and AI capabilities under a single remit.

“Andrew’s appointment will accelerate our strategic efforts in data analytics, digital innovation and responsible AI,” Miller said in a statement to the ASX. “By integrating these functions under Andrew’s leadership, we aim to become a truly service-centric organisation.”

The newly created role bypasses the traditional CMO reporting line and reflects the strategic weight now being placed on enterprise-wide digital intelligence, as Westpac rolls out its UNITE transformation program.

McMullan holds a PhD in Statistics from the University of Glasgow and has led data and digital strategy across global institutions, with a career focused on using AI to enhance customer and employee experience.

He will officially join Westpac in September 2025.