| 2010- 2014 |
Professor in International Relations and Public International Law, Faculty of Social Sciences, Oxford Brookes University, Oxford, UK. |
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| 2009-2010 |
Associate Professor & Academic Director, Institute for International Law of Peace and Armed Conflict, Ruhr-Universität Bochum, Germany. |
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| 2000-2008 |
Associate Professor, Department of International Law, Law Faculty, Erasmus University Rotterdam, the Netherlands. |
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| 1998-1999 |
Assistant Professor, Department of International Relations, Faculty of Political & Social-Cultural Sciences, University of Amsterdam, the Netherlands. |
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| 1994-1998 |
Assistant Professor, Law and Governance Group, Department of Social Sciences, Agricultural University Wageningen, the Netherlands. |
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| 1994-1998 |
Project Manager, Romania Project, Milieukontakt Oost-Europa, the Netherlands. |
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| 1989-1994 |
PhD Candidate, Department of Public International Law, University of Utrecht, the Netherlands. |
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| 1988-1989 |
Junior Lecturer, Department of Public International Law, University of Utrecht, the Netherlands. |
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