After 5 years integrated course in IISER,several opportunities are there :

* You can work as a staff scientist or principal investigator in research lab.

* Teaching opportunities are also opened after this course after qualifying the exams like NET, B. Ed etc.

* After completing phd, you can work in a industry in R&D Department. Also work as a sales manager after completing MBA..

* You can also work as a legal advisor.

Good luck!