1. Professor, IIT Guwahati,  27th April 2008 - tilldate
  2. Associate Professor, IIT Guwahati,    October 2004- April 2008
  3. Assistant Professor, IIT Guwahati,  May 2000- October 2004
  4. Senior Lecturer, IIT Guwahati,  October 1999 -   May 2000
  5. Visiting Professor, Institute of Engineering and Computational Mechanics (Formerly Institute of Mechanics B), University of Stuttgart, from 9th June to 21st July 2005 under DAAD-IIT faculty exchange scheme. Also visited the same institute from 2nd May  2010 to 10th July 2010 under Sim Tech, Cluster of Excellence program.