- Professor (HAG), Department of Physics, Indian Institute of Technology-Kanpur, August 2021 - present.
- Professor, Department of Physics, Indian Institute of Technology-Kanpur, June 2014 - present.
- Associate Professor, Department of Physics, Indian Institute of Technology-Kanpur, May 2009 - June 2014.
- Assistant Professor, Department of Physics, Indian Institute of Technology-Kanpur, October 2004 - May 2009.
- Postdoctoral Research Associate, University of Wisconsin-Madison,USA, October 2001 - October 2004.
- Distinguished Postdoctoral Fellow (Kisotokken), The Institute of Physical and Chemical Research (RIKEN), Japan, April 1999 - October 2001.
- Ph.D (Experimental Plasma Physics), (Japanese Government Monbusho Scholar), January 1996 - March 1999 The Institute of Physical and Chemical Research (RIKEN), Japan, and, The Graduate School of Science and Engineering, Saitama University, Japan.