Stephen is the founder of JOIN Israel, as well as the Israeli nonprofits Ofkei Chaim and Pitronot L'Chaim, and the social enterprise Prakti, which makes weddings affordable for low-income families. A serial social entrepreneur, he has launched over 100 philanthropic initiatives, with a focus on efficient, high-impact giving. He holds a B.Sc. from the Wharton School, rabbinic ordination, and eight professional certificates.