Yulia Sister and her family repatriated to Israel in 1990. In 1992–1993 she served as a senior researcher of the Department of Inorganic and Analytical Chemistry at the Hebrew University of Jerusalem, and then she was engaged in the topics related to the analysis of biological objects at the Tel Aviv University. During these years, along with her career in chemistry, Yulia Sister became deeply interested in the study of Russian-Jewish culture.
In 1991 Sister began to write for the Shorter Jewish Encyclopedia (SJE) as a non-staff editor. She served as a research fellow covering the field of history of science and wrote about 90 articles for the encyclopedia. Yulia is the author of the articles "Chemistry" (jointly with P. Smorodnitsky), "Veniamin Levich", "Frederick Reines", "Moise Haissinsky", "Yuri Golfand" and many others.
Yulia Sister's activities in the House of Scientists and Experts of Rehovot started in 1991. Within this forum she organizes lectures, seminars and scientific conferences. She leads the scientific seminars of the House of Scientists that are regularly held at the Weizmann Institute of Science. In 2008, and then in 2014 she organized conferences devoted to the Bilu movement and to the First Aliyah. She also maintains friendly contacts with foreign colleagues, such as the Club of Russian-speaking scientists of Massachusetts.
In 1997 Mikhail Parkhomovsky initiated creation of the Research Center for Russian Jewry Abroad, which aimed to collect and publish information on Jews, who emigrated from the Russian Empire, Soviet Union or Post-Soviet states and made a contribution to world civilization. Parkhomovsky became the Scientific Director and Chief Editor and Yulia Sister Director General of the Center. From 2012 the Center changed its name to Research Centre for Russian Jews abroad and in Israel (Erzi). The collection, processing and publication of materials related to Russian Jewry are organized by Sister. By 2015 the Center published about 30 volumes of collections, including books devoted to Jews in England, France, U.S., Israel and other countries. In addition to her executive functions, Sister is a frequent editor and author of the Center's collective monographs. She is the editor of the 17th volume ("Let Us Build the Walls of Jerusalem. Book 3"), a coeditor of the 11th volume ("Let Us Build the Walls of Jerusalem. Book 1") and of the monograph "Israel, Russian Roots", and a participant in the editing of the 10th volume.
Sister's activities include the organization of seminars and conferences. The following examples are a small sampling of the events organized by the Director General of the Center. In 1999 she was the coordinator of the conference dedicated to the 50th anniversary of the Weizmann Institute in Rehovot. Together with Prof. Aron Cherniak she published a detailed report on the conference and some of its materials in the 8th volume of the "Russian Jewry Abroad" series. In 2003 Sister led a conference in Kiryat Ekron, in which she introduced the contribution of the Russian Aliyah to Israeli science, culture and education. More than 200 scientists from all over the country participated at the tenth-anniversary of the Center conference in 2007. The 2012 conference was devoted to the 130th anniversary of the First Aliyah and the event was covered by the House of Scientists of Rehovot.
Yulia Sister lives with her family in Kiryat Ekron. Her husband, Boris (Bezalel) Iosifovich Gendler, is a physician with an extensive experience in medical practice and education. After his repatriation from Kishinev Bezalel Gendler worked as a doctor in one of the Israeli hospitals and published several articles, some of them in collaboration with Yulia.