Mateus Kowalski holds a PhD in International Politics and Conflict Resolution, a Master degree in International Law and a degree in Law.
He is currently the Director of the International Law Department / Department of Legal Affairs of the Ministry of Foreign Affairs of Portugal; an Associate Professor at the Autonomous University of Lisbon; a Guest Professor at the of the New University of Lisbon School of Law; and a researcher at the Observatory of Foreign Relations (Observare-UAL).
He was a Legal Officer at the Office of the United Nations Legal Counsel / Office of Legal Affairs.
He is a member of the International Law Association, the European Society of International Law, the American Society of International Law and the Portuguese Society of International Law.
He is the author of several publications and presentations on, among other areas, International Law theory, the United Nations system, international criminal justice and topics related with peace and security.