Salary cannot be assured. It  depends on your performance in the 4 years of Btech, your pointers and your CGPA. But some of the top institutes that provide good placements are as follows -

1. CVR COLLEGE OF Engineering
2. Chaitaniya Bharati Institute of Technology
3. JNTUH college of Engineering
4. Vasavi College of Engineering
5. Osmania University

Refer to the link below for more detailed information..

https://engineering.careers360.com/colleges/ranking/top-engineering-colleges-in-telangana-accepting-ts-eamcet-score

best wishes. Thankyou.