Harley is Director for Global Health and Development at the National Security Council. He was a 2010-2011 White House Fellow and Senior Public Health Advisor at the United States Agency for International Development. Prior, Harley served as Director of the Global Health and Foreign Policy Initiative and a Professorial Lecturer at the Johns Hopkins Nitze School of Advanced International Studies. He directed all daily operations of a Gates Foundation grant to improve global health policymaking and train future leaders at the nexus between international relations and global health. Harley also served as an author and senior consultant to the CSIS Global Health Policy Center and is a Fellow with the Truman National Security Project. Prior to Johns Hopkins, Harley consulted for the Nuffield Trust on health and security issues, was a program associate with the California Endowment, and worked as an interviewer and analyst on the Baltimore City needle exchange vans. Harley was a Luce Scholar in Chiang Mai Thailand, worked in the Nagatyad refugee camp with refugees from the Bosnian War, and volunteered for 3 years with the Llanberis Mountain Rescue Team on Mount Snowdon in North Wales. Harley received a Ph.D. in public health policy from the London School of Hygiene and Tropical Medicine, a Masters in Public Health from the Johns Hopkins Bloomberg School of Public Health, and graduated with Honors from Wesleyan University.