社会科学高等研究院
Tejel is currently professor of international history at the Graduate Institute of International and Development Studies, in Geneva. He was previously a research fellow at the School of Oriental and African Studies and at the School for Advanced Studies in the Social Sciences in Paris. He's been also a lecturer at the University of Fribourg, the University of Neuchâtel and again in Fribourg. He holds a PhD from the School for Advanced Studies in the Social Sciences in Paris and from University of Fribourg.