Dennis is founder and president of The Whittle Group, which helps people, organizations, and companies break down barriers and invent the future. From 2000-2010, he was CEO and co-founder of GlobalGiving, the world's leading website that matches donors directly with community-based projects around the world. GlobalGiving has facilitated tens of millions of dollars of funding to over 3,500 projects in one hundred countries. Funding has come from nearly 200,000 individual users as well from the world's most innovative companies and foundations. Prior to founding GlobalGiving, Dennis worked at the World Bank for 14 years. From 1997-2000, he co-led the World Bank's Corporate Strategy and Innovation units, which created the Development Marketplace - an open access competition for funding. These Marketplaces have now been replicated in over 50 countries, providing tens of millions of dollars to innovative initiatives generating improved economic, social, and environmental conditions. From 1992-1997, he led a variety of initiatives in the Bank's Russia program, including housing reform and energy efficiency. From 1987-92, Dennis was an economist in the World Bank's Jakarta office. Prior to the World Bank, Dennis worked in the Philippines for USAID and the Asian Development Bank. He has lectured or spoken at many schools, including UNC, Princeton, Harvard, MIT, Stanford, and Oxford. Dennis graduated with honors in religious studies from the University of North Carolina - Chapel Hill and did his graduate work in development studies and economics at Princeton University. Dennis also completed the Advanced Management Program at Harvard Business School.

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