Global business and technology consulting firm West Monroe has announced that Bret Greenstein has joined as Chief AI Officer. A globally respected AI executive with more than three decades of experience leading large-scale transformations, Greenstein will lead West Monroe’s AI strategy to drive transformational impact for its clients by integrating AI across client delivery, commercial offerings, and workforce adoption.

Greenstein brings a wealth of industry expertise in advising the C-suite as they navigate and capitalize on the next generation of technology. He most recently led Generative AI at PwC, focused on offerings, alliances and go-to-market for AI. He previously served as Global AI & Analytics Leader at Cognizant and held multiple leadership roles at IBM, including Global CIO for emerging markets and Vice President of Watson IoT. He has also advised Fortune 500 CEOs, led global forums such as the World Economic Forum’s Global Future Council on Data, and spoken at major conferences including TED AI.

“Bret joins West Monroe at a time when bold innovation and the need to drive real results faster has never been higher,” said Gil Mermelstein, CEO of West Monroe. “Our clients are navigating seismic changes in their industries, and AI is both a catalyst and a tool for transformation. West Monroe’s multidisciplinary approach — combining industry, functional, and technology expertise — is a strong advantage for innovation. Bret’s leadership strengthens that edge, pushing the boundaries of what’s possible to deliver lasting value for our clients. He also brings the inspiration to help our clients as well as our employees see the art of the possible with AI—and the practical execution to get there quickly.”

As Chief AI Officer, Greenstein will lead West Monroe’s AI strategy through three core mandates:

• Accelerating AI-driven transformation for clients
• Embedding AI into client delivery
• Equipping the AI-native workforce

“I’m excited to build on West Monroe’s track record of success, culture of innovation, and deep technology expertise to help build one of the most AI-native consulting firms in the market,” Greenstein said. “This is a time for bold thinking, disciplined execution, and a deep commitment to helping people succeed. West Monroe has the right mindset and momentum—and I’m honored to be part of what comes next.”