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Our Team

The Riverdale Jewish Center (RJC) is a modern Orthodox community synagogue in the Riverdale section of the Bronx, New York. Since its founding in 1954, the RJC has served as the center of a diverse Jewish community—uniting, supporting, and inspiring the entire community in furtherance, and under the guidance, of eternal Torah law and values. The RJC’s numerous religious, social, and educational programs nourish individuals of all backgrounds and ages to grow in Torah learning, connect with God, and celebrate the beauty of Jewish life. Our members are devoted to working tirelessly for the spiritual growth and physical welfare of the Riverdale community, the Jewish people, the State of Israel, the United States of America, and humankind.


Klei Kodesh

Rabbi Yitzi Genack


(O) 718.548.1850 x 115

(C) 201.220.8865


Rabbi Yitzi Genack studied at Yeshivat Derech HaTalmud from 2002-2005 and completed his BA in mathematics and semicha from YU/RIETS, where is currently a fellow in the Wexner Kollel Elyon and completing an MA in Jewish History. He has taught in local area high schools and worked as  an Assistant Editor at OU Press, responsible for compilation of the Halachic portions of the Soloveitchik Siddur, Haggadah and Kinot as well as multiple editions of the Mesorah journal. After interning at the East Hill Synagogue in Englewood from 2010-11, Rabbi Genack came to the RJC as Rabbinic Intern and then as Assistant Rabbi where he has been involved in teaching, programming and pastoral work. He is married to Shoshana, a dietician practicing in Westchester, and they are the proud parents of Avi, Yaakov and Tani.


Chazzan Shimon Craimer

Shimon Craimer



Chazzan Shim comes to us from London, England where he studied classical cantorial style with the Chief Rabbi.  He first came to the attention of the Riverdale Jewish Center as a Rosh Hashana and Yom Kippur guest cantor.  Now, as the cantor of the RJC, Shim travels the country performing at various shuls, chagigahs, simchas, concerts and events. He has released 2 albums, the most recent of which earned him plaudits from the Jewish music world. Shim is married and has 4 kids, all of whom have 3 letter names.



Executive Director

Oren Hiller


Oren previously worked at the Mount Sinai Jewish Center in Washington Heights where he was Executive Director for nine years.  While at Mount Sinai Jewish Center Oren oversaw a one million dollar building renovation, received over $250,000 in Homeland Security security grants allowing for extensive security upgrades, introduced ShulCloud to MSJC, making MSJC one of the the first 4 synagogues to use ShulCloud as their database. Oren is a ShulCloud power user and trainer. Oren and his wife Janis live in Fair Lawn, NJ, were Oren was President of of Shomei Torah for three years.  They have four daughters and three granddaughters.

718 548-1850, x. 113


Rivka Alter

Rivka Alter








Yoetzet Halacha

Rivka Alter is a Tanakh teacher from Bergenfield, NJ. She taught middle and high school students for fifteen years at the Denver Academy of Torah where she developed the high school Tanakh curriculum. She is a yoetzet halacha and is currently completing her dissertation at the YU’s Azrieli Graduate School in the area of problem based learning and Tanakh. She has been involved in adult education in a variety of forums and formats. Her husband, Daniel, is head of school at the Moriah School in Englewood, New Jersey. They are parents to seven children, ranging in age from 19 to 4. 

Rivka is reachable by phone at 201 503-6597

or at






RJC Mission and Values Statement

Monday, July 15, 2019 12 Tammuz 5779