Tom Walsh serves as GSF's Head of Communications and Advocacy, based in London. Before joining GSF, he was a Senior Program Officer for Global Policy & Advocacy at the Bill & Melinda Gates Foundation, building partnerships to support governments in investing wisely in health and development. From 2004-2012, he worked on PEPFAR, the President's Emergency Plan for AIDS Relief, at the State Department in Washington. He held a variety of roles, including as PEPFAR's deputy head and its chief of staff, and served as its acting head for five months during the 2009 presidential transition. At both the Gates Foundation and PEPFAR, collaboration with faith leaders and communities was central to his work. Before that, Tom worked at the US Senate Committee on Finance on strengthening domestic health programs. He is an attorney by training.