A health systems specialist with experience in the public, private and non-profit sectors, David's early work focused on public health in conflict and  humanitarian settings including Sudan, Ethiopia and Nicaragua. He has worked as an adviser for the Department for International Development (DFID) and the European Commission (EC) on issues including HIV/AIDS, reproductive and maternal health. Currently, he is providing strategic advice to governments, international organisations and businesses on health systems strengthening, eHealth and organisational management.