PhD from the Universidad Complutense de Madrid (with “European Doctor” mention – University of Cambridge), where he is Senior Fellow, awarded by the Program “Researcher Talent” (2022-2026). He is an associate professor at IESP-UERJ, where he works in the Postgraduate Programs in Political Science and Sociology and co-coordinates the Center for Social Theory and Latin America Studies (NETSAL). Has been visiting professor at more than a dozen universities in Latin America and Europe. Currently, is President of the Research Committee on Social Classes and Social Movements (RC47) of the International Sociological Association (ISA) and Director of the Latin American Sociological Association (ALAS). Member of Grupo Permamente de Alternativas al Desarrollo and promoter of several initiatives of articulation between social movements and the university. Founder and editor, with Geoffrey Pleyers, of Open Movements (Open Democracy) and columnist and member of the advisory committee of Latinoamérica 21. works mainly in the areas of political sociology, social theory, and Latin American sociology, and his current research addresses three main themes: the transformations of contemporary activism and social movements; the politics of socio-ecological transitions; and the transnational circulation of knowledge, ideas, and protest.