Edited sentence: , 1989-June, 1993., Bangladesh Atomic Energy Commission, Oct.Atomic Energy Commission, August 2002-September 2003.Chairman, Bangladesh.Chairman, Department of Microbiology, Dhaka University, November 1993-July 1994.Director, Bio-science, Bangladesh Atomic Energy Commission, March, 1988-September, 1988.Director, I.Director, International Affairs, Bangladesh Atomic Energy Commission, Mar’98 – July ‘99.Director, Planning & Development, Bangladesh Atomic Energy Commission, July94 – Feb 98.Director, Planning & Development, Bangladesh Atomic Energy Commission, July’93 – Oct.Director, Planning and Development, Bangladesh Atomic Energy Commission, 1994-1998.Head, Microbiology Division, Institute of Food and Radiation Biology, AERE, Savar,1982-1988.Member, Bio Science, Bangladesh Atomic Energy Commission, March 1999 – August 2002.Project Director, National Institute of Biotechnology, Ministry of Science and Information & Communication Technology; 1999-2003.Project Director; Research, Development and Academic programme of BAEC; 1999-2002