[5] Moinfar worked at the plan and budget organization during the reign of Shah Mohammad Reza Pahlavi.

[6][13] He was also appointed chairman and managing director of the National Iranian Oil Company (NIOC), replacing Hasan Nazih in the post.

[6][14] Moinfar continued to serve as oil minister after the resignation of the interim government of Bazargan in November 1979.

[15] In the Majlis Moinfar was one of the supporters of Abolhassan Banisadr together with Mehdi Bazargan, Ebrahim Yazdi, Yadollah Sahabi and Ahmad Sadre.

[16] Moinfar's tenure as oil minister lasted until September 1980 when Mohammad Ali Rajai formed the cabinet.