Carles Sierra is the Director of the Artificial Intelligence Research Institute (IIIA) at the Spanish National Research Council (CSIC) in Barcelona. He served as President of the European Association for Artificial Intelligence (EurAI) from 2020 to 2024. Since 1985, he has made significant contributions to AI in areas such as Knowledge Representation, Auctions, Electronic Institutions, Autonomous Agents, and Multiagent Systems. He has also served as Editor-in-Chief of the journal Autonomous Agents and Multi-Agent Systems (JAAMAS). In 2019, he was awarded the ACM/SIGAI Autonomous Agents Research Award in recognition of his outstanding contributions to the field.