In 1994, Masri founded and now is the chairman of the board of Massar International, since the establishment of Massar, he has been one of the most prominent figures promoting private sector development and growth in Palestine.He has dedicated his life to establishing, investing, transforming, networking, training and building what is now a widely known group of businesses bridging Palestine to global technologies, knowledge, know-how and industry best practices. In the past decade, he has launched businesses in financial services, real estate, media and communications, retail businesses, agribusiness and information technology.