Go for IIT or NIT if not then,
You should take comedk exam for engineering in karnataka get a 4 digit rank and choose CS or IAS in the applicable engineering college.
And if you score more than 70% in engineering you will easily find a job in bangalore or around.
But be specific with the branch because studying something like mechanical and then working in IT is not justified to your four years of Engineering.
In 4 digit rank you can manage all below colleges in CS (computer Science) or IAS (Information Science).
RV
Pesit
Bms
Bit
Ramaiyah
Mvit
Nie, mysore
Dayanand sagar
Sit, tumkur
Rnsit
JSS
Bnmit
Any of the above college is good but trying getting the top 5.