Julissa Reynoso Pantaleón is a distinguished lawyer and diplomat, currently a partner at the international law firm Winston & Strawn in New York. Born in the Dominican Republic, she has played a pivotal role in U.S. diplomacy, serving as Ambassador to Spain and Andorra until 2024. In her role as ambassador, Reynoso was instrumental in strengthening bilateral relations and advancing U.S. interests in the region, earning her recognition as one of the most influential diplomats in the country. Before her ambassadorial role, she served as Assistant to the President and Chief of Staff to Dr. Jill Biden, overseeing key initiatives from the Office of the First Lady, and as Co-Chair of the White House Gender Policy Council, where she advanced gender equality across government policies.

Prior to her service in President Joe Biden's administration, Reynoso was a partner at Winston & Strawn, specializing in international law and issues related to Latin America. In addition to her public service, she has been a professor at Columbia University Law School and the School of International and Public Affairs, shaping the minds of future leaders in law and international policy. She is a member of the Council on Foreign Relations, the American Law Institute, and the Inter-American Dialogue. Reynoso has authored numerous publications in both English and Spanish on topics such as comparative law, regulatory reform, community organizing, immigration policy, and Latin American politics.

Julissa Reynoso holds a B.A. in Government from Harvard University, an M.Phil. from Cambridge University (UK), and a J.D. from Columbia University. Her extensive professional and academic background establishes her as a leading figure in international relations and law.