● Scientific Director, Institute for Vegetable and Ornamental Plants, Grossbeeren/Erfurt e.V.
● Scientific Director, Agricultural Inspection and Research Institute (LUFA) of the LMS Agricultural Consulting, Rostock
● Professor of Plant Nutrition, University of Rostock
● Consultant, head of the LDE Agricultural Academy at Land-Data Eurosoft, Hofgeismar
● Long-term lecturer, German Academic Exchange Service, DAAD
● Freelance Consultant since 2011, Professor Kuchenbuch – Agrarknowhow