Our Dedicated & Talented Team
Different generations and a variety of specialties.
Meet the real faces and let us start a new game adventure
Jaap van Muijen
The senior psychologist in serious leadership games.
Patrick Spekman
The actor who switches between serious roles & cabaret.
Wessel van Arnhem
Chief of the student pool.
Lars van den Brand
Video magician.
Gert-Jan van Arnhem
A lifetime dedicated partner of 4Challenge.
Michelle Witsenburg
The assessment psychologist participating in gamified assessments.
Max Brouwer
The brilliant & charming gamemanager.
Ruben Uyterlinde
Data woozle. (reports)
Matunda Groenendijk
Audio-visual artist.
Margreet Uyterlinde
Founder of 4Challenge
Marga de Groot
The psychologist you also meet in gamified assessments.
Koen Franse
The actor you don't want to meet when he is not happy.
Wessel van Arnhem
The (online) teacher every kid wants.
Marieke van Arnhem
Spider in the web.
(technical support)
Juul van Arnhem
Stylist to make it all a bit more beautiful.