Ancillary activities
- Member | Commissie Wetenschappelijke Integriteit | Universiteit Utrecht | Not remunerated
- Member | Lid Tenderboard Nationaal Slavernij Museum | Gemeente Amsterdam | Not remunerated
- Extern Expert | Sapiens Network on Sustainable Public Procurement (EU Horizon 2020 ITN Marie Curie) | EU; Universitá di Torino | Not remunerated
- Expert Public Procurement | TAIEX databank | European Commission Directorate-General Neighbourhood and Enlargement Negotiations | Remunerated ()
- Member | Raad van Advies Nederlandse Verening van Aanbestedingsrecht | Nederlandse Vereniging van Aanbestedingsrecht | Not remunerated
- Co-hoofd | Centre for Public Procurement | Utrecht University | Not remunerated
- Member | Lid van het Bestuur Thomas More Stichting | Thomas More Stichting | Not remunerated
- Revisor of the Financial Administration of the ELC Region | Revisor Arcarum ELC Regio | Society of Jesus, Catholic Church, Rome / Antwerp | Not remunerated