since 2002
Professor at the Hochschule Niederrhein, Faculty of Food, Nutrition and Hospitality Sciences with the field of teaching Business Administration, in particular Service Management
1994-2001
Officer for Social Marketing in the Federal Office of Malteser Hilfsdienst e.V.; from 1997 Member of the Executive Board (Social Marketing and Sales)
1990-1994
Employees in a management consulting firm in Düsseldorf with specialisation in strategy development, leadership and sales