Sergio is International Policy and Advocacy Lead of the Tax Justice Network. He is an interdisciplinary human rights activist and researcher, and an Atlantic Fellow for Social and Economic Equity since 2021. He has a passionate commitment to forging alliances across movements and geographies to advance economic justice at a global level. Before joining the Tax Justice Network, Sergio worked at the Center for Economic and Social Rights (CESR), where he contributed to build and strengthen the Initiative for Human Rights in Fiscal Policy, a cross-movement coalition that aims to transform the way decisions on public resources are taken. In Colombia, his home country, Sergio worked at the think-do tank Dejusticia, the National Congress, and the Political Council of Bogota. He has also worked as a consultant for several organizations, multilateral agencies, and public institutions, in areas relating to drug policies, decent work, land reform and transitional justice. Sergio holds a MSc in Inequalities and Social Science from the London School of Economics, and he studied economics, philosophy and holds a MA in Law from the National University of Colombia.