Institute Post-doctoral Fellows
Candidates having PhD in environmental science and engineering, chemical engineering, chemistry, earth sciences, environmental toxicology, environmental science, life sciences, meteorology, microbiology, physics, public health, statistics, or a related field are eligible for Post-Doctoral Fellowship. Post-doctoral Fellowship is offered on the basis of academic record and interview.
For more detail follow the link: http://www.iitb.ac.in/en/careers/institute-post-doctoral-fellows
For external funded Post-doctoral Fellows (NPDF, and other similar fellowships) can directly talk to the faculty members.