Cem Boyner started his business life in the family company Altınyıldız in 1978. He has served as Boyner Holding Executive Board Chairperson during 1982-1994. Cem also served as the Turkish Industrialists and Businessmen Association (TÜSİAD) Board of Directors' Chairperson between 1989-1990, before becoming Boyner Holding Executive Director in 1996. Cem  took over the Boyner Holding Board of Directors' Chairperson position in 2010, when Osman Boyner became the Honorary Chairperson. He is also the CEO of Boyner Group.