- Assistant Professor : Department of Life Sciences Central University South Bihar, Gaya, India. 15th June, 2020 to till now.
- Ramalingswami Fellow: Department of Biotechnology, Govt. of India . 1st November, 2019 to till now.
- Assistant Professor : University PG department of Botany, LNMU, Darbhanga, India[ 2nd September, 2019 to 15th June, 2020.
- Postdoctoral Research Associate: Department of Biology, College of Science, Engineering , & Technology, Jackson State University, Jackson, MS, USA [16th April, 2012 to September, 2019].
- Postdoctoral Fellow : Department of Physiology, University of Tennessee Health Science Centre (UTHSC),Memphis, TN, USA [1st September, 2010 to 15th April, 2012].
- Postdoctoral Fellow: Cellular & Intergrated Physiology Department, Indiana University (IUPUI), Indianapolis, IN, USA [1st March, 2008 to 31st August, 2010].
- Research Scholar{ Graduate, PhD} student : CSIR-Central Drug Research Institute (CDRI), Lucknow, U.P.[ 23rd February 2003 to 31st December, 2007].
- M.Sc student : University PG Depatment of Botany, Patna University, Patna[1997-1999].