hi

i assume you have bsc in computer science. if it is so, then yes. you can do btech after a bsc.

many colleges offer a provision called lateral entry scheme trough which you can do a btech or BE after bsc.

after your bsc you must approach colleges for btech admission in lateral entry. that is, you will be admitted in the 2nd year instead of starting from 1st yr.

the required criteria in most of the colleges are,

you must have a decent score in class 12

no arrear and have graduated in bsc successfully

you have math as one of your subjects in bsc.

if you satisfy these criteria, then you can proceed to get admission in a Btech course.

hope i answered you.

comment for any doubts

good luck