Hello Shravan,

It is good to hear that you want to join DRDO/ISRO after the completion of your graduation. The following organisation offers JOB in Labs and Institution with over 1,000 vacancies every year and recruit the best. For more information about Job offers in DRDO/ISRO, eligibility's, follow the link below:-

https://engineering.careers360.com/articles/isro-drdo-barc-dae-how-work-here

Good Luck.