West Monroe Appoints Bret Greenstein as Chief AI Officer to Drive Firmwide Artificial Intelligence Strategy
West Monroe hires Bret Greenstein as Chief AI Officer to lead AI strategy and adoption. He brings 30+ years of experience from PwC, Cognizant, and IBM.

West Monroe Appoints Bret Greenstein as Chief AI Officer
West Monroe, a management and technology consulting firm based in Chicago, has announced the hiring of Bret Greenstein as its new chief AI officer. Greenstein, who will be based in New York, brings over 30 years of experience in leading large-scale technology transformations.
In this role, Greenstein will steer West Monroe’s AI strategy focusing on three key areas:
- Developing AI-enabled offerings across various industries
- Integrating AI into client service delivery
- Driving AI adoption within the firm through enablement and governance
Greenstein expressed enthusiasm about joining West Monroe, highlighting the firm's culture of innovation and expertise. He stated, “I’m excited to build on West Monroe’s track record of success to help create one of the most AI-native consulting firms in the market.”
Proven Leadership in AI and Technology
Greenstein joins West Monroe from PwC, where he spent the last four years as a partner and generative AI leader, managing offerings, alliances, and go-to-market strategies. Prior to that, he was Senior Vice President and global head of AI and analytics at Cognizant for three years.
His earlier career includes 25 years at IBM, where he held roles such as global vice president of Watson IoT solutions and offerings, and global CIO for emerging markets.
Strengthening West Monroe’s AI Capabilities
Gil Mermelstein, CEO of West Monroe, emphasized the importance of AI in client transformations. He said, “Our clients face significant changes in their industries, and AI serves as both a catalyst and a tool for transformation. Bret’s leadership will broaden our ability to deliver lasting value.”
West Monroe is already leveraging AI for clients in areas like software, outsourcing, workforce strategy, and data reporting. Internally, employees use a proprietary AI tool to access resources, manage systems, and receive guidance.
Firm Overview and Recent Leadership Additions
With a workforce of 2,250 people, West Monroe operates across nine U.S. offices and international locations in London and San Jose, Costa Rica. Its practices cover business operations, M&A, organization and people, customer engagement, product and experiences, and data and technology.
Earlier this year, the firm also welcomed Harin Shetty, former Accenture executive, as president and board member.
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