Indian Institute of Space Science and Technology
| Indian Institute of Space Science and Technology |
| Director | October 2024 - Present date |
| Aryabhatta Research Institute of Observational Sciences, India |
| Director | December 2019 - October 2024 |
| Indian Institute of Astrophysics, Bangalore, India |
| Senior Professor | July 2021 - Present date |
| Professor | January 2016 - June 2021 |
| Associate Professor | October 2010 - December 2015 |
| Reader | April 2007 - September 2010 |
| Scientist C | June 2004 - March 2007 |
| Center of Excellence in Space Sciences, IISER ,Kolkata |
| Adjunct Faculty | 2002 - Present date |
| National Astronomical Observatories of China, Beijing, China |
| Visiting fellow of the Chinese Academy of Sciences | April 2015 - May 2015 |
| Centre for Plasma Astrophysics, K.U. Leuven, Belgium |
| Visiting professor: Capita Selecta lecturer | March 2013 - May 2013 |
| Senior Fellow of the research Council | February 2012 - May 2012 |
| Postdoctoral Fellow | March 2002 - March 2004 |
| Fellowship granted by the (F.W.O.) or Fund for Scientific Research - Flanders (Belgium). Project title: 'Solar drivers of space weather'. |
| Postdoctoral Fellow | March 2000 - February 2002 |
| Two year fellowship granted by the research council of the Katholic University of Leuven, worked at the Centre for Plasma Astrophysics, Belgium. Continuing on the SOHO project. |
| Armagh Observatory, Armagh, United Kingdom |
| Postdoctoral Fellow | September 1997 - February 2000 |
| Particle Physics and Astronomy Research Council (PPARC) fellowship of the United Kingdom, worked at Armagh Observatory, studying the dynamics of solar atmosphere using data from the SOHO satellite (The Solar and Heliospheric Observatory), a NASA/ESA project. Data analysis and theoretical modelling. |
| Indian Institute of Astrophysics, Bangalore, India |
| Research Assistant | December 1996 - September 1997 |
| Indo-US project between Indian Institute of Astrophysics and Harvard Smithsonian Institute (between submission of PhD thesis and defence). |
| Belur Vidyamandir, Ramakrishna Mission Degree College, Calcutta, India |
| Teaching Assistant | October 1989 - July 1990 |