Ferziger holds the Samson Raphael Hirsch Chair for Research of the Torah with Derekh Erez Movement in the Department of Jewish History and Contemporary Jewry at Bar-Ilan University, Ramat Gan, Israel.

Ferziger has published articles in leading academic journals of religion, history, and Jewish studies and is the author or editor of seven books including: Exclusion and Hierarchy: Orthodoxy, Nonobservance and the Emergence of Modern Jewish Identity (Philadelphia: University of Pennsylvania Press, 2005); Orthodox Judaism – New Perspectives, edited with Aviezer Ravitzky and Yoseph Salmon (Jerusalem: Magnes Press, 2006); and most recently Beyond Sectarianism: The Realignment of American Orthodox Judaism (Detroit: Wayne State University Press, 2015), which was the winner of a 2015 National Jewish Book Award.

In the latter role he taught thousands of American youth about the legacy of Eastern European Jewry and the destruction of the Holocaust.

He is also invited regularly to lecture publicly throughout Israel, North America, Continental Europe, South Africa, and the United Kingdom.

He and his wife, Dr. Naomi (née Weiss) Ferziger (mentors Professor Ari Zivotofsky and Professor Ruth Feldman[1]), moved to Israel in 1989 and raised their six children in the city of Kfar Saba, where he is active in teaching and facilitating connections to Jewish religious life for all sections of the local population.