Ashu Srivastav nice that you are doing PhD. After having the degree you must attain the post doctoral fellowship. Will your Institute allow you for PDF just after finishing PhD?
You are doing excellent degree from a good institute in India.
Just to let you know that PDF is not considered a job, it is training (for 3 years mostly, after that it is considered bad for career, after that you need to get to some staff job or second post-doc or company). Faculty is impossible after one post-doc unless you have 2/3 papers in high profile journals like Nature. If you want to go back to India, Modi has zero plan for adjusting NRI and you will be in hot water.
95% of PDF positions are given to people who contact the researcher of his/her area by sending a personal letter and resume and showing current work and trying to convince him that "I want pursue my research in your area for career". If there is funding available in that lab or if someone is done with PDF and he/she wants replacement. You may need to try to relevant researchers for post-doc and not just for the sake of job. Write each letter very very carefully after going thru his reprints and making a good connection that you are really interested, not just throw your resume (that will never work).
5% PDF can be available thru Government fellowships (Ministry of education, see a book, "Study Abroad" you can buy from local book store in Bombay) or some fellowships as advertised in Science or Nature., those are highly competitive and takes 6months-1year to get it if you are successful. (In India, It involves interview in Ministry of Education with embassy personal of that country). Still you need to contact a researcher for lab space in that country not to jump to any lab where clerk place you.
Hope that helps, if you need further suggestions, pl contact me at [email protected]