 Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran.
Mathematical Biology Research Group, April 2010-present.
 Research Institute of Petroleum Industry, RIPI, Tehran, Iran
Reservoir Simulation Research Group, Feb 2002-Sep 2006
 Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran.
Post-Doctoral Fellowship, Sep 2000-Sept 2002
Resident Researcher, Apr 1997-Aug 2000
 The Abdus Salam International Center for Theoretical Physics (ICTP), Trieste, Italy.
Research Fellowship, Mar-Oct 2001.