1977-1978, Chairman Dep. of Biology, Ferdowsi University Mashhad, Iran.

  1980-1994, Research Consultatant, Ministry of Higher Education, Iran.1994-1998.

  Research Consultant of Fisheries Research and Education Organization of Iran.

 Executive Secretory of First Iranian Congress of Zoology September 1997.

 Vice Dean Faculty of Science , University for Teacher Education , Tehran , June 2000 –2003

  Chairman Dept. of Biology Islamic Azad University Tehran , Science and Research Branch from 2003-2005