He is Professor of Judaistic at the University of Vienna and a figure of reference in the Hebrew and Jewish Studies. Its prestigious publications have become one of the most relevant internationally in the field of literature, history and religion of the Jewish researchers.

Among his books are among the most recent, Judaica Minora I and II (2010) and Einleitung in Talmud und Midrash (ed. Revised 2011). He is on the editorial board of many internationally renowned journals, such as Journal for the Study of Judaism, Rabbinic Judaism of Review, and member of the scientific advisory board of Miscellany Arab and Hebraic Studies, among others.