Mariana Mas is a policy officer for freedom of information and expression with the Open Society Justice Initiative.
Prior to joining the Justice Initiative, Mas was a program officer in the Centro de Archivos y Acceso a la Información Pública in Uruguay, where she was in charge of policy analysis and research in matters related to freedom of information, citizen participation, and freedom of information related to other human rights (gender, disability, environment, migrants). She was a co-founder and board member of Datos Abiertos, Transparencia y Acceso a la Información, where she was in charge of strategic planning, policy analysis, budgeting, and program design. Mas has also worked as a human rights activist with different NGOs and as a consultant and a researcher for various international organizations, including the UNDP and the World Bank, in the areas of freedom of information, citizen participation, civic technology, open data, and privacy.
Mas studied political science and international politics at the Universidad de la República (Uruguay) and the Université de Sherbrooke (Canada).