PhD in Political Science at IUPERJ (2001), Ana Paula Balthazar Tostes currently is a Senior Fellow of the EUROPE Program at Brazilian Center for International Relations (CEBRI), professor at the Institute of Social and Political Studies (IESP-UERJ) and at the Department of International Relations of UERJ. She is a researcher at FAPERJ and CNPq (PQ-Nivel 2), and is a member of the Interdisciplinary Observatory of Climate Change (OIMC), the Acauã (Bulletin of International Relations), and coordinator of LabRI/UERJ.

She was visiting professor at the Free University of Berlin (FUB, Germany), a post-doctoral researcher and visiting professor at the Department of Political Science at the University of São Paulo (USP), and visiting professor and associate professor at the Department of Political Science in James Madison College (JMC), at Michigan State University (MSU, USA). Her works in research and teaching focus mainly in European studies, EU, International Institutions, Regional Integration and International Relations.