Associate professor of physics (physics department at the Sharif university of Technology), since October 2006.

Assistant professor of physics in Sharif university Sept. 2005- Sept. 2006.

Assistant professor of physics (Institute for Advanced Studies in Basic Sciences (IASBS-Zanjan) at the physics department) Sept. 2001 to Sept. 2005.

Guest scientist at "Max-Planck Institute for the Physics of Complex Systems" from July 1, 2004 to September 30,  2004 in the division of Electronic Correlations.

Non-resident researcher in the department of physics of the Institute for studies in theoretical Physics and Mathematics (IPM, P.O.Box: 19395-5531, Tehran, Iran) from October 2001 to June 20, 2004.

Guest scientist at "Max-Planck Institute for the Physics of Complex Systems" from June 15, 2003 to September 30,  2003 in the division of Electronic Correlations.

 BAT-IIA position in the department of physics at Wuppertal university from June 1 to December 30, 2002.

I got a position in "Max-Planck Institute for the Physics of Complex Systems" from the 20-th of August 1999 until the 30-th of September 2001, as a guest scientist (post-doc position) in the division of Electronic Correlations.