Rabbi of the Ohr Chadash community in Ramot, Jerusalem, Founder and Editor-in-Chief of Tzarich Iyun, a journal of Haredi philosophy, head of the Haredi Israel Division of the Tikvah Fund, and a lecturer in the Faculty of Law at Hebrew University and in other academic and religious frameworks. Pfeffer holds a bachelor’s and a master’s degree in law from Hebrew University, and completed an Israeli Supreme Court internship (under Justice Neil Hendel). He is a Board Member of Netzah Yehuda, an organization that supports Haredi IDF soldiers. He previously served as a Dayan (Rabbinical Judge) on a monetary Rabbinical Court in Jerusalem, and in a variety of rabbinical and legal positions.