Born into a family of theatre artists in The Hague, he joined the Nederlands Dans Theater (NDT) in 1965 as a junior electrician. From 1970 to 1995, he was the NDT’s technical director. In 1970, he also became the company’s lighting designer. Since that time has worked on 600 productions, including of ballets by Hans van Manen, Jiří Kylián, Nacho Duato, Jennifer Muller, Louis Falco, Glen Tetley, Maurice Béjart, Nils Christe and others. He has also closely collaborated with Jean-Paul Vroom, Keso Dekker, William Katz, Walter Nobbe, Nadine Baylis, John F. Macfarlane, Michael Simon, and many other set designers. Caboort has worked as lighting designer for over 100 theatres and opera houses worldwide, including the Royal Opera House Covent Garden in London, L’Opéra de Paris, Wiener Staatsoper, Bayerisches Staatsballett in Munich, and the Metropolitan Opera in New York. In 1995, he opened his own bureau for Lighting Design & Theatre Consultancy and has since been working freelance. Furthermore, he serves as a lecturer in theatre techniques at the Graphic Lyceum in Rotterdam.