Alex is Director of Sustainability Research Center & Strategic Resource Management and Academic Director of Master's program in Sustainability Management at School of Engineering at Universidad del Desarrollo & Research Associate to the Water Research Center for Agriculture and Mining awarded in Fifth National Competition for Research Centers in Priority Areas of National Commission for Scientific & Technological Research (CONICYT in Spanish). Further, he is Head of Waste to Energy Research & Technology - Chile at WTERT Council and Research Associate at Earth Engineering Center at Columbia University. Throughout his career, he has had a strong involvement as a member of advisory boards into governmental institutions such as CONICYT, National Commission in Innovation and Development (CNID), Ministry of Finance, Ministry of Environment as a member of the Advisory Council in three administrations. He has been member of the presidential commissions for innovation in water resources (CNID) and long-term planning of the electricity system (Ministry of Energy). He has been referee in peer-reviewed journals and environmental projects in institutions such as CONICYT and CORFO (National Developing Bank). He has been columnist on media about "Sustainable Development, Sustainable Science and Public Affairs."

In 2015, He was a member of Chilean delegation for COP21, supporting to Ministry of Finance. His contributions are summarized in more than 90 presentations to national and international conferences, on 40 publications indexed as author or co-author, one book, and 6 chapters, being also associate editor and reviewer in various journals indexed. In 2019, He was member of scientific committee on Climate Change in an advisory body of the Ministry of Science, Technology, Knowledge and Innovation organizing the COP25. At International level, he is very committed with Science Diplomacy. He is a member of the Global Young Academy, an international organization aiming to empower and mobilize young scientists to address issues of importance to early career scientists; and as a member of Nexus KAN of Future Earth organization, an international research program for global sustainability working on Water-Energy-Food Security Nexus. Between 2017 - 2019, He was member of the High-Level Panel of Experts Steering Committee on Food Security and Nutrition (HLPE), Committee on World Food Security (CFS), Food and Agriculture Organization (FAO), United Nations (UN), coordinating two main global reports:

Since 2019, He works as Review Editor of Chapter 13 titled "National and sub-national policies and institutions) for the Working Group III to the IPCC Sixth Assessment Report (AR6) and lead author of Chapter "Moving from linear to a circular economy: What this means for business? For Global Environment Outlook (GEO) for Business at Science Division, United Nation Environment Programme. He has served as expert reviewer of the 2019 Global Sustainable Development Report (GSDR) prepared by the independent group of scientists appointed by the United Nations Secretary-Genebra and for "10 New Insights in Climate Science 2019" report of Future Earth & The Earth League, Stockholm, 2019 for COP25. Also, he served as Panel Member of Water Quality Task Force (TF) for International Water Resources Association (IWRA) working on the Water Quality Project: "Developing a Global Compendium on Water Quality Guidelines". In Chile, he has contributed with the Proposal for Science Diplomacy about STIC Chile-United States as member of Chile-United States Council for Science, Technology and Innovation (STIC) in the US Embassy.

Finally, in 2019, he was awarded as Doctor Honoris Causa - Doctor of Laws at the University of Wisconsin - Green Bay for his contribution to the creation of public policies and innovations in the private sector on issues of Sustainability. His field research is Sustainability Science.