Professor in Political Science (PS), Director of the PhD in PS, 2015-2024; was also Director of the Degree in PS, 2009-2015, ISCTE-IUL – Lisbon University Institute. He was a researcher at CIES-Iscte. He taught and/or presented at conferences as a guest at several Portuguese and foreign universities. Freire directed several research projects on ideology, electoral behavior, institutions, political reforms, as well as political representation. On these subjects he published abundantly (nationally and internationally). He was a regular columnist for Público, 2006-2016, and was a regular columnist for Jornal de Letras, 2017-2021, in addition to other occasional collaborations in the mass media, and was an expert and guest consultant for several national (FCT, A3ES, DGAI-MAI, AR, etc.) and European institutions.