Engineering Entrance Exam

There are limited number of jobs in computer science in government sector. Ofcourse, the demand is very high in private sector. However, the need in government sector is also increasing year by year. You can give ISRO and DRDO exams to be a computer engineer at ISRO, DRDO, HAL, etc. You can crack UPSC exam to get a government job in information branch.

You may get NIT, Jammu and Kashmir at this rank or you can try for eastern NITs. You have no chance in top NITs. You can also try for GFTIs like Tezpur University, Assam University, etc.

JEE, BITSAT, SRMJEEE, WBJEE, VITEEE, UPSEE, MAHCET and COMEDK are the entrance exams.

Your JEE score is decent for top colleges. Check the colleges through this link:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

According to the data, 2.5 lakh students are nearly selected for JEE Advance 2019 but I think, nearly 1.7 lakh will give JEE Advance exam because of the matching date with other exams like WBJEE, etc. Also, JEE Advance is quite tougher as compared to other papers.

Yes, you will get a seat in Shiv Nadar University with this score. Last year, students with the same score got a seat in the same college.

Yes, you can get admission in Amrita University. Your rank is good enough to get you a seat in this college. You can apply with your category also to get reservations benefits. And keep all the documents ready for verification at the time of admission.
Best of luck.

If you belong to the general category then with this percentage forget about any scholarship or a concession for a branch like CS.

JEE results are out, check it. IIIT-Hyderabad, VIT-Vellore and other private colleges will announce the cut-off rank after JEE Advanced exam is over.
All the best.