With over 20 years in public relations, Simmy served as the Director of the International Media Section at Yad Vashem for ten years, overseeing global communication and media content across print, digital, and broadcast platforms. He organized media coverage for high-profile visits and led campaigns for major events such as the 5th World Holocaust Forum and the inauguration of the Book of Names at the United Nations. Simmy previously worked as Foreign Press Assistant to the Mayor of Jerusalem and International Relations Coordinator for the Herzliya Conference.