Throughout my academic career, I have gone through three distinct phases. During the initial period (2007-2015), my research primarily focused on EU citizenship and migration law. My contributions to EU law include participating in five cases before the ECJ and legal inputs to the Commission, Parliament, and the Fundamental Rights Agency.

Since 2011, I have developed a keen interest in Latin America. My latest monograph, published in 2018 by Cambridge University Press, is now considered the go-to resource for studying citizenship, nationality, and migration in South America, offering a comprehensive and comparative analysis of the subject from a legal and historical perspective. The book is presently undergoing translation and is expected to be available in Spanish by 2024.

Starting in 2018, my work entered its third phase, which is primarily interested in the free movement of people regimes at a global level. As of 2023, I received a grant from the Open Society Foundations to map and compare all bilateral and multilateral regimes. The project officially commenced on the first of November 2023.

I have provided expertise to various organisations throughout my career. For instance, the Intergovernmental Authority on Development (IGAD) in East Africa invited me to help draft its Protocol on Free Movement of Persons in 2019. In 2021, I was also commissioned to evaluate Argentina's legislation and write a Protocol on Access to Justice for Migrants and Refugees. Moreover, I have compiled a comprehensive dataset of migration laws for the Inter-American Development Bank for 26 countries in Latin America and the Caribbean, completed in 2022. Most recently, in 2023, I was invited by the Quito Process to attend meetings in Santiago de Chile and share my expertise. I have been asked to provide evidence to Parliaments in Chile, Colombia, Ecuador, Peru and to MPs in Uruguay.