Guilherme is a Tenured Professor at the Law Department of ITAM since August 2023. He had originally joined ITAM in 2019 as Profesor Asociado (tenure-track), after sessional and full-time teaching and research appointments in Australia (James Cook University and The University of Queensland), China (Xi’an Jiaotong University), Finland (University of Helsinki) and Italy (La Sapienza). He taught an intensive seminar at Universidad de los Andes (Colombia).

Guilherme was a Visiting Professor at Sciences Po Law School in June 2021 and a participating Faculty Member at the Intensive Doctoral Week of the same institution during June 2023. In January 2024 he will be a Visiting Professor at National University of Singapore Law School teaching an intensive course on Law & Aesthetics.

He is an Affiliated Research fellow at the Erik Castrén Institute of International Law and Human Rights (University of Helsinki), having held other past affiliations at the Research Centre for Public Law (University of Lisbon) and The Collaborative Innovation Centre For Silk Road Economic Belt Studies (Xi’an Jiaotong University).

Guilherme has a Law Degree from Universidade Nova de Lisboa (2006) comprising a semester at the University of Trento (Erasmus Exchange) and a Joint LLM in Law & Economics from Bologna, Hamburg and Haifa Universities (2008). He obtained a Master of Research (2009) and a PhD (2012), both in Political and Social Sciences, from the European University Institute.

At ITAM, Guilherme teaches both Private International Law and Law & Culture. He has experience teaching and tutoring comparative jurisprudence (Chinese-Western traditions), public international law, international dispute settlement, comparative law, theories of international relations, global ethics, economics of European integration, and Australian business law & ethics.

Research wise, he is interested in interdisciplinary and comparative thinking about the role(s) of law in social ordering and its manifold relations to aesthetic and cultural media. He has published articles on law and humanities, the concept of transnational law, modern systems theory, Chinese foreign relations and philosophy, Badiou’s ethics, and legal education. More policy/public sphere-oriented work has focused on the quality of the Portuguese civil justice system and legislation, political funding, and constitutional amendment. His articles have appeared in, among other, The International Journal for the Semiotics of Law, International Theory, German Law Journal, Canadian Journal of Law and Jurisprudence, Critical Perspectives on Accounting, and The Chinese Journal of Comparative Law. With Maria Varaki, and for Cambridge University Press, Guilherme co-edited the book Ethical Leadership in International Organizations: Concepts, Narratives, Judgment, and Assessment, the first sustained discussion of the potential and limits of virtue ethics in international affairs.

Since August 2020, he is the Associate Editor of Isonomía – Revista de teoría y filosofía del derecho, a Scopus-listed journal after February 2022. He is also a Board Member of CALUMET - Intercultural Law and Humanities Review (from March 2023) and the International Journal for the Semiotics of Law - Revue internationale de Sémiotique juridique (from December 2021).

At ITAM, he has setup, with Prof. Rodrigo Camarena, and the collaboration of Profs. Pablo Rapetti and Adriana Alfaro, regular writing and reading workshops and conference series on law and music, law and literature, and law and critique. A joint attempt to create informal, decentralized, and critical spaces of reflection with students.