He has been a member of the coaching staff of the national teams at three World Cups and three European Championships, with Netherlands, and South Korea and Russia, who were both managed by Guus Hiddink at the times of the appointments.

He has also worked with a number of European club sides, including Barcelona of Spain, Zenit Saint Petersburg of Russia, English teams Chelsea F.C and Manchester City, and Australian team Brisbane Roar.He has also been a personal fitness coach to Craig Bellamy during his spells at Manchester City and Cardiff City, and advised Bayern Munich about the fitness of Arjen Robben.