1980-1990 Professor, Chair of International Public Law and European Law; 1990-1999 Litigation Partner Stibbe – Brussel; 1996-2003 International Commissioner in charge of Legal affairs – Real Property Claims Commission (Bosnia); 1998-2001 Member of the United Nations Compensation Commission, Geneva; 1998-2002 Arbitrator and Senior Judge at the Claims Resolution Tribunal for Dormant Bank Accounts, Switzerland.
