Initiated and established the Amex-Interdisciplinary Center Club. Dr. Zellermayer established and supported the Zoom Institute for Market Research. Serves as director and head of financial reports and audits at Delek Automotive Systems, Ford Importer, Mazda, and BMW. Served as Head of Marketing Strategy at the Israeli Democracy Institute and Academic Chair of Automotive and Experience Marketing conferences. He has served as a judge at the Effie Awards competition promoting marketing and advertising, the Best Product of the Year Competition, and the Super-Brands competition.