Christos Makropoulos is a Professor at the School of Civil Engineering of the National Technical University of Athens (NTUA), the Director of the Laboratory of Applied Hydraulics and the Director of NTUA’s Institute for Smart, Sustainable and Resilient Infrastructure (ISSRI), the co-Editor in Chief of Urban Water Journal and a member of the Editorial Board of the Journal of Hydroinformatics and the Editorial Board of Water. He is an expert in hydroinformatic tools and methods for water management, water-energy systems analysis and environmental systems protection and has worked extensively on distributed infrastructure design and control, critical infrastructure protection and whole cyber-physical system modelling for digital twins. His work addresses issues of resilience, risk and security analysis, uncertainty quantification, multi-objective evolutionary optimization, decision support, long-term policy scenario development and system stress-testing. He has authored more than 250 journal and conference papers, as well as several book chapters and he is a co-author of the international textbook ‘Urban Drainage’. He is a Fellow of the UK Higher Education Academy and a Fellow of the UK Royal Geographical Society.