As a member of the Executive Board

• Member of the Conference of Rectors of the Association of Universities in the Netherlands (UNL) (unpaid) - as of 2018
• Member of the Education, Research & Valorisation Steering Group (SOOV) (unpaid) - as of 2018
• Member of the Rectors Assembly of LERU (unpaid) - as of 2018
• Member of the Advisory Board of the Sonnenborgh Museum (unpaid) - as of 2018
  
• Member of the Board of Trustees of the Prince Claus Chair (unpaid) - as of 2018
• Member of the Rectors Assembly CHARM EU (unpaid) - as of 2019
• Member of the Rectors Assembly Coimbra Group (unpaid) - as of 2019
• Member of the Daily Board of EWUU Alliance (unpaid) - as of 2019
• Member of the Administrative Board International Association of Universities (unpaid) - as of 2022

As a professor

• Member of the City of Utrecht's Referendum Committee (since 1999) (paid, in favour of UU) - as of 1999
• Extraordinary Professor at the University of Western Cape, South Africa (unpaid) - as of 2012
• Chair State Commission on the Rule of Law (paid, in favour of UU) - as of 2022