After completing your B.Tech you can go for campus placement.

If you are interested in higher education you can opt for M.tech if you have interest in management you can go for MBA. 

You can also go for diploma course like embedded technology, VLSI, robotics, ethical hacking, protocol testing, machine designing and more are some specialized course.

You can also try for civil services exam you join the Indian Army/Navy/Air Force or any other wing. 

Good Luck!!