W.A. (Willem) Janssen is an Assistant Professor in Public Economic law at the law department of Utrecht University, and a researcher at the Public Procurement Research Centre. He specialises in European and Dutch public procurement law.

He published his dissertation with Eleven Publishers on the influence of EU public procurement law on self-organisation by public authorities. For this purpose, he was a Visiting Scholar at The George Washington University’s Government Procurement Program in Washington D.C. in 2014. He regularly publishes on this subject in international and national journals, is a co-author of the Dutch legal commentary “Tekst & Commentaar Aanbestedingsrecht” and writes a monthly column at Gemeente.nu on government and market. In 2015, his joint research with E.R. Manunza led to questions in the Dutch Parliament

He lectures public procurement law, competition law and state aid law. Additionally, he coordinates the executive course ‘Samenwerking tussen lokale en regionale overheden’. He is currently part of the national committee on ‘Beter Aanbesteden’ (Better Procurement), which is initiated by the ministry of Economic Affairs, and a board member of the Dutch Association for Public Procurement law (NVvA). Previously, he was a member of the NEVI and NVvA committees that were in charge of preparing for the new EU public procurement Directives.

Prior to this, he read law at Utrecht University and Copenhagen University and graduated with honours. Subsequently, he briefly worked at Lander & Rogers, a lawfirm in Australia, and at Boekel de Nerée, a lawfirm in The Netherlands.