In 1962, Rabbi Schneier became the Senior Rabbi at Park East Synagogue in New York City. During his service there, Rabbi Schneier has hosted several world religious and political leaders including Pope Benedict XVI—the first-ever papal visit to an American synagogue—and two Secretaries General of the United Nations. Schneier has met with Popes John Paul II, Francis, and Ecumenical Patriarch Bartholomew I to promote and facilitate interfaith dialogue. In 2012, the New York Senate passed a resolution in celebration of Rabbi Schneier's 50 years of service at Park East Synagogue. He is also the Founder and Dean of Park East Day School, a Modern Orthodox Jewish day school.