Rabbi Jansenson was principal of a yeshiva in Madrid until 2004 when he returned to the US. He taught at Barkai Yeshiva in Brooklyn and then moved to Great Neck, NY. Many middle school children attending North Shore Hebrew Academy in Great Neck are taught by to Argentinean–born Gaby Jansenson, also an alumni of the Shehebar Sephardic Center. The young teacher also teaches teach Talmud Torah three times a week. Mentored by Rabbi Bitton, Jansenson leads the youth minyan on Shabbat.