Instructor of physics, Shiraz Univ., 1988 to 1992

Assistant Prof. of Physics, Shiraz Univ., 1992 to 1993

Public lecturer, Biruni Observatory, 1985 to 1993

Laision o cer of the Iranian Phys. Soc. in Shiraz Univ., 1988 to 1993

Assistant Prof. of Physics, Zanjan Univ., 1993 -2003

Associate Prof. of Physics, Zanjan Univ., 2003 -...

Jiont member of the staf of IASBS, Zanjan, 1994 -...

Head of Department of Physics, Zanjan Univ., 1994 to 1996

Rector of College of Science, Zanjan Univ., 1996 to 1998

Educational Vice-Chancellor of Zanjan Univ., 1997 to 1999

Rector of College of Science, Zanjan Univ., 2002 to 2004

Head of the site selection committee of Iranian National Observatory, 1999-

President of Iranian Astronomical Society, 2002-2006

Vice President of Iranian Physical Society, 2008-

Member of the Education and Research Commision of IRI Parliment, 2008-

Member of the Cultrural and Civilization Commitee of the Cultural Rev. Council.-2010.

Referee of the 12th Book awards of the Ketabiran, 2010.

President of the Astronomical Fraction in IRI Parliment, 2008.

Member of working group for the 5th 5-year program of the country Development, 2010.

President of Iranian Astronomical Society, 212-

Vice President of Iranian Physical Society, 212-