• 2002-present , Assistant Professor, Electrical & Electronic Eng . Dept . , Iran Univ of Sci . & Tech ., Tehran, Iran.

• 2004-present , Head of Electronic Group (Discipline ), Electrical & Electronic Eng . Dept . , Iran Univ of Sci . & Tech ., Tehran, Iran.

• 199 2 -1997 , 2003-present , Director of Computer Centre, Electrical & Electronic Eng . Dept . , Iran Univ of Sci . & Tech ., Tehran, Iran .

• 1997-2002 , Demonstrator, Department of instrumentation & Analytical Science (DIAS), Univ. of Manchester Inst. of Sci. & Tech. (UMIST), Manchester, England.

• 1992-1993 , Research Assistant, Electrical & Electronic Eng . Dep t. , Iran Univ of Sci . & Tech ., Tehran, Iran.

• 1995-1997 , Supervisor of the Laboratories, Electrical & Electronic Eng . Dep t. , Iran Univ of Sci . & Tech ., Tehran, Iran.

• 1995 , Appointed Member of the Organising Committee for the 3^rd Iranian Conference on Electrical Engineering (ICEE-1995).

• 1993-2002 , Instructor, Electrical & Electronic Eng . Dep t. , Iran Univ . of Sci . & Tech ., Tehran, Iran.