Flip Klijn is Director and Scientific Researcher at the Institute for Economic Analysis (IAE-CSIC) and a Research Professor at the Barcelona School of Economics (BSE).

His research interests are in Matching Theory, Market Design, Game Theory, Operations Research, and Social Choice Theory.

He is currently involved in experimental and theoretical research on centralized assignment mechanisms in public schools and general exchange markets without monetary compensation. He is also a member of a research team that together with the Spanish National Transplant Organization aims to redesign the algorithm of the Spanish National Kidney Exchange Program.

He has published in leading journals such as the American Economic Review, Journal of Economic Theory, and Games and Economic Behavior. Professor Klijn has been a research fellow at Harvard Business School and he has held visiting research chairs at Aix-Marseille School of Economics and Innsbruck University. He also co-wrote a report for the Dutch Ministry of Education, Culture, and Science on a new centralized university admission system in the Netherlands.