Lord Mayor of the City of Bonn
Minister for Federal and European Affairs, International Affairs and Media of the State of North Rhine-Westphalia
Deputy Head of the General Directorate Management Deutsche Welle
Member of the North Rhine-Westphalian State ParliamentSpokesman for the CDU parliamentary group in the Enquete Commission on "Equal Opportunities in Education"
Member of the State Parliament of North Rhine-Westphalia
Member of the Management Board, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH
Managing Director and Head of the Gustav Stresemann Institute, Former Chairman of the IDP
Former Federal Data Protection Commissioner
Editor-in-Chief of the Bonner-General-Anzeiger
Vice Rector for International Affairs at the University of Bonn
District Administrator Rhein-Sieg-Kreis
Member of the European Parliament