Rav Rael Blumenthal grew up in Johannesburg, South Africa, where he attended Yeshiva College of South Africa. He spent three years at Yeshivat Kerem B'Yavneh, where he studied under Rav Menachem Mendel Blachman. He then went on to Yeshiva University, earning a degree in Computer Science, and received semicha from RIETS, where he studied under Rav Hershel Schachter.
Before his aliyah, Rav Blumenthal served for eleven years as Rabbi of BRS West in Boca Raton, where he grew the community from 20 families to over 200. He also taught as a Rebbe at Katz Yeshiva High School and has extensive experience working with teens and young adults through NCSY. He is the founder of Mekoros (mekoros.com), a platform for authentic Talmud Torah using AI, and his shiurim and writing can be found at raelblumenthal.org. In Elul 5786 he returned to KBY as Director of the Overseas Program.