Esteban studied Law at the Universidad Austral of Chile. Later he obtained a Master in Political Science from Universidad Autónoma of Barcelona, Spain (2009) and a Master of Science (MSc) in Comparative Politics at the London School of Economics and Political Science, United Kingdom (2010, with distinction). Esteban is affiliated to the Universidad Católica del Norte, in Coquimbo, Chile, where he is an academic in the fields of constitutional and administrative law. Also, he is a member of the Chilean Association of Constitutional Law, the Chilean Association of Administrative Law (ADAD), the Chilean Chapter of the International Society of Public Law (ICON), and the Society of Tourism Researchers of Chile. He has conducted research in the fields of constitutional and administrative law, especially about decentralisation, participation and deliberation, the political system, political equality, social rights and constitutional jurisdiction.