Hii

If you are interested in the same field then you can go for B.Tech computer science and after UG you can further go on by studying MTech in same stream or else you can also otp for MBA. This will open up a lot of fields for your jobs. 
To apply into BTech you will have to give the JEE mains exam once you complete your diploma or when u are in the final year of diploma.
Qualifying JEE allows you to enter into any engineering college to study BTech and then further you can choose your path as you feel comfortable.

Hope this helps.

Thanks!!