| Fellowship/Service | Institution | Year |
| Professor | Indian Institute of Astrophysics Bangalore, INDIA |
2010- |
| Associate Professor | Indian Institute of Astrophysics Bangalore, INDIA |
2004-2010 |
| Scientist D | Indian Institute of Astrophysics Bangalore, INDIA |
1999-2004 |
| Scientific Officer (SD) | Indian Institute of Astrophysics Bangalore, INDIA |
1997-99 |
| Fellow | Indian Institute of Astrophysics Bangalore, INDIA |
1991-97 |
| CIES Senior Fellow | CERGA, CAUSSOLS, 06460 St. Vallier de Thiey, FRANCE |
1988-89 |
| Research Associate | Indian Institute of Astrophysics Bangalore, INDIA |
1986-91 |
| Senior Research Assistant | Indian Institute of Astrophysics Kodaikanal/Bangalore, INDIA |
1981-86 |
| CAS Senior Research Fellow | Institute of Radiophysics and Electronics, Calcutta University, INDIA |
1980-81 |
| CAS Junior Research Fellow | Institute of Radiophysics and Electronics, Calcutta University, INDIA |
1976-80 |