David is founder and Chief of the United Nations Social Impact Fund (UNDP-UNSIF), an innovative impact investment fund, jointly established with UNDP, UNEP, UNFPA and UNCDF. Prior to joining the UN, David has held senior management positions within strategy, digital and business development with global corporations. Joining the UN in 2005, David served as the Chief of Digital for the Joint United Nations Programme on HIV and AIDS (UNAIDS), Chief of the Web and Knowledge Management Unit at the United Nations Conference on Trade and Development and Practice Leader of the Asia-Pacific Region Knowledge, Innovation and Knowledge Group for the United Nations Development Programme.