Posner serves as the Senior Vice President, Ensuring the Jewish Future at the Jewish Federation of Greater Los Angeles. He was born and raised in Baltimore, MD and graduated in 2005 from Brandeis University, where he double majored in Psychology and Near Eastern and Judaic Studies and minored in Journalism. Previously, he has served as the Senior Director of K-12 Education and Engagement at Temple Isaiah in LA, the foundingCamp Director of Havaya Arts, and the Director of YouthEngagement at Combined Jewish Philanthropies in Boston. A graduate of the Harvard Graduate School of Education (as a Wexner Fellow and Davidson Scholar), Reuben lives in Los Angeles with his daughters, Aria and Hadas, and his wife, Elly.