Willem (Pim) Geelhoed is an associate professor of Criminal Law and Criminal Procedure. He studied Law at Leiden University, where he graduated in 2006 with a specialization in Criminal Law. In that year, he started his career as a researcher and lecturer at Leiden University’s Institute for Criminal Law and Criminology. In 2013, he defended his PhD thesis, which dealt with the expediency principle and the way this is influenced by European Union law. Between 2013 and 2017, he was an assistant professor of Criminal Law and Criminal Procedure at Leiden University, and from 2017 to 2021 at the University of Groningen. In 2021, he was promoted to associate professor. His interests lie in the field of Europeanization of Criminal Law, in comparative criminal law and procedure, particularly within Europe, and in topics related to organized and financial crimes.

Willem is also an ad hoc judge at the Court of Appeal of Arnhem-Leeuwarden. He is a member of the Meijers Committee, a committee of experts specialized in European immigration, refugee and criminal law. He regularly advises governmental organizations on matters relating to European criminal law.