John is a Managing Director and Climate Tech Practice Leader in Deloitte’s U.S. Sustainability practice, where he helps Fortune 500 companies turn decarbonization into competitive advantage. He leads Deloitte’s climate tech work, connecting innovators with market access, regulatory insight, and operational expertise to move solutions from pilots to large-scale deployment. John also oversees digital and data strategy for Deloitte’s sustainability business and previously led the CEO’s Responsible Enterprise agenda, including designing Deloitte’s Net Zero strategy. With deep experience at the intersection of sustainability, technology, and finance, he brings a pragmatic view of what it takes to turn ambition into measurable business value. John holds an MBA from Harvard Business School and a B.A. from Brown University.