- Brahmaputra Chair Professor for Water Resources, IIT Kharagpur; Sep 2016 - Sep 2021.
- Professor (HAG, Level 15), Agricultural and Food Engineering Department, IIT Kharagpur; Sep 2009 onwards.
- Professor (Scale: PB437400 – 67000, AGP INR 10500), Agricultural and Food Engineering Department, IIT Kharagpur; Jun 2003 - Aug 2009.
- Associate Professor,Agricultural and Food Engineering Department, IIT Kharagpur; May 1999 to Jun 2003.
- Assistant Professor, Agricultural and Food Engineering Department, IIT Kharagpur; Jan 1994 - May 1999.
- Lecturer, Agricultural and Food Engineering Department, IIT Kharagpur; May 1989 - Jan 1994.
- Junior Scientist, Agricultural and Food Engineering Department, IIT Kharagpur; Mar 1987 - May 1989.