Chatzimarkakis held a lectureship at the University of Duisburg from 1997 to 2001, during which time he also worked on his doctoral thesis on Informational Globalism - A cooperation model of global governance using the example of electronic commerce (Informationeller Globalismus - Kooperationsmodell globaler Ordnungspolitik am Beispiel des Elektronischen Geschäftsverkehrs ).