2008-2015 Nickerson-Zwaan Senior Breeder Leek, Made, Nl
Responsible for the leek breeding program for Northern Europe.
2004- 2007 Western Seed Head R & D Naaldwijk, Nl
Responsible for the world wide breeding and research programs in tomato, pepper, melon and smaller crops.
1998- 2004 Advanta Seeds, Holland Team Leader Onions Rilland, NL
Responsible for onion breeding, product development, seed production and -quality for North Western Europe.
1991-1998 Leen de Mos R&D coördinator ‘s-Gravenzande, NL
Co-ordinator for all research at Vander Have’s Vegetable Seeds division:
lettuce, cucumber, tomatoes, sweet pepper, melon and onion
1988-1991 Vander Have Plant Breeder Corn Rilland, NL
Head of the silage corn breeding program for North Western Europe.
1986-1988 International Potato Research Center, Lima, Peru
Associated-Expert for Potato Gene Bank research, maintaining and evaluating the cultivated potato collection.
1984-1986 Wageningen Agricultural University Associated Expert
Responsible for breeding resistance’s into potato, using wild species, making crosses and screening for resistance’s and alkaloid content.