The office is led by five partners – Rem Koolhaas, Ellen van Loon, Reinier de Graaf, Shohei Shigematsu and Managing Partner, Victor van der Chijs – and employs a staff of around 220 of 35 nationalities. Architects, researchers, designers, model makers, industrial designers and graphic designers work in close collaboration, and expert consultants are intimately involved from the beginning of the design process.