Hey Puneet. Thanks for reaching out. The question you have asked is very broad, before I suggest you anything I want to get a few more details. I want to know your:
What all have you done in B.tech till now (extra curricular activities, projects),
Your areas of interest
Your expectations from your career.
If you give these inputs to me we can filter down and contemplate more in depth before you make any choice and take it up seriously. However some of the options that you can think of can be as follows:
Taking up a job in your field of engineering
Doing Masters in technical field (M.Tech or MS (outside India))
Starting your own business
Joining defence services (CDS)
Applying for government exams like UPSC, SSC, State exams, Banking examT
The options I have stated are very broad and the scope, job prospects, nature of work in all these options can be explored further depending on your area of strengths and interest.
Please feel free to reach out if you want to know any further details like application process, job prospects, how you should prepare etc.