1978: University of Groningen, PhD, Supervisor Professor Hans Wynberg1978: Royal Dutch Shell, Amsterdam, The Netherlands, Research scientist1982: Shell Biosciences Laboratories, Sittingbourne, UK, Agrochemical research1983: Royal Dutch Shell, Amsterdam, Catalysis research1985: University of Groningen, Lecturer, Chemistry1988 to date University of Groningen, Professor and Chair of Organic Chemistry