I am a Senior Researcher and management team member at the Netherlands Institute for the Study of Crime and Law Enforcement NSCR, a research institute of the Dutch Research Council (NWO). I am program leader of two of its five research groups, and also Professor at the Department of Sociology, Utrecht University.

Feel free to contact me should you have any questions.


  • Geographic/environmental criminology
  • Policing
  • Quantitative/Analytical/Computational Sociology
  • Open Science/Open-source


  • PhD in Social Sciences, 2008

    Radboud University Nijmegen

  • MA in Sociology, 2002

    Radboud University Nijmegen




  • ruiter@nscr.nl
  • +31 20 598 5427
  • De Boelelaan 1077
    1008BH Amsterdam
  • Enter Vrije Universiteit Initium building at main reception, go to top floor and follow signs to NSCR
  • Working remotely during COVID-19 pandemic
  • DM Me