In 2014 Willem got scouted by Amsterdam based model agency Max Models which resulted in him working with brands like Prada, Gucci, Dries van Nooten and Raf Simons. Additionally, he did shoots for Vogue, Wallpaper, Dazed, GQ and the New York Times, working with names such as Mario Testino, Willy van der Perre and Coco Capitån.