Supplementary judge in the Arnhem and Den Bosch courts of first instance
Supplementary judge in the Administrative High Court
Attorney at Holla Advocaten (Den Bosch)
Legal Counsel of the City of The Hague
Owner/attorney at Resolución (The Hague and Washington D.C.)
Academic:
Lecturer constitutional and administrative law University of Amsterdam
Senior lecturer constitutional and administrative law Utrecht University
Professor of European administrative law and public administration at Maastricht University
Visiting professor Comparative and Global Administrative law at Tilburg University
Visiting scholar in residence and researcher at the Program of Law and Government at American University Washington College of Law
Guest professorships in China, France, Spain, Sweden.