Graduate, English College, Johor Bharu, 1959—1961. Graduate, Royal Military Academy, Sungei Besi, 1962—1965. Bachelor, University Malaya, 1966—1969.
Diploma in Public Administrator, University Malaya, 1971—1972. Master of Public Administration, Pennsylvania State University, United States, 1980—1982.
His last office in the civil service was Chief Secretary to the Government from 1 February 2001 to 2 September 2006. He is currently the President of Putrajaya Corporation, the local government of Putrajaya, and Chairman of the Employees Provident Fund. Prior to being Chief Secretary, Samsudin was the secretary-general for the Ministry of Domestic Trade and Consumer Affairs from 1994 and the Ministry of Home Affairs from 1996.
He obtained his Bachelor of Arts (Honours) from the University of Malaya and Master of Public Administration from Pennsylvania State University.
He is also a former student of the renowned English College Johore Bahru and Royal Military College, Sungai Besi.
Married Suslita Abdul Majid. Children: Syahrunizam, Suzleena, Syahrizal.