Najjar was born on 2 December 1956 in Tehran,[6] ethnicity Azerbaijani,[7] from Bostanabad.[8] He graduated from K. N. Toosi University of Technology in 1977 and holds a BSc in Mechanical Engineering from Khajeh Nasir Toosi University of Technology (1984) and a master’s degree in strategic management from the University of Industrial Management (2004).[6][9]