In Charge of Working-Out Contracts and Markets, National Company of Industrial Achievements and Studies, SNERI, 1972-1973. Administrative Officer, Ministry of Industry and Energy, 1973-1974. Senior Executive, General Management of Sonatrach, National Oil Company, 1977-1981. Counsel to the General Manager of Sonatrach. Member of the Algerian delegation on the Law of the Sea, United Nations, New York. Advocate at the Supreme Court of Algeria. Advocate at the State Council.