Yishai is a GIS spatial analyst for Keren Kayamet Leyisrael, to help further Jewish land ownership and development in Israel. On the side he worked as a Madrich and Rebbe for high schoolers in Yeshivat Tichonit Givat Shmuel and for gap year students coming to Israel to learn Torah before their college degrees or drafting in the IDF in Eretz Hatzvi. Periodically on Shabbatot he works as a Shabbat Madrich for the Schuster Heritage House to help spread Shabbat and Jerusalem to Jewish youth from abroad.