From 1973 to 1976, he worked as an engineer, senior engineer of the Kazakh branch of the Selhozenergoproek All-Union Scientific Research Design Institute, then as an instructor, Deputy Head of Department, Responsible Organizer of the Almaty Regional Committee and Central Committee of the LKSMK until 1982.
[1] From 1991 to 1992, Sudin served as the Head of the Department of Coordination and Personnel work of the Almaty City Administration.
In 1993, he became the Deputy Chairman of the Central Election Commission and served the post until 1995 when being appointed as the State Inspector of the Organizational and Control Department of the Office of the President of Kazakhstan, First Deputy Head of the Department of Territorial Development of the Office of the Kazakh Government.
In January 1996, Sudin became the Head of the Department of Civil Service and Personnel Policy of the Presidential Administration.
[2][3] From there, Sudin served as a member of the National Commission for Women Affairs and Family and Demographic Policy under the President.