India

B.Tech is not just a degree as it makes you a responsible person. If you are passionate about it, then definitely good companies are waiting for you. You also have the option of your own start up.
The job opportunities depends on your subject. Here I am giving some example from the core branches:
1. Mechanical
The top firms for recruitment are:
I. ONGC.
II. VSSC.
III. ISRO.
IV. IOC.
V. DRDO.
VI. SAIL.
VII. NTPC.
2. Civil:
I. Structural engineer.
II. Water engineer.
III. Nuclear engineer.
IV. Quantity surveyor.
V. Engineering geologist.
VI. Building control surveyor.
3. Computer Science:
I. Database administrator.
II. System developer.
III. Web designer.
IV. Web developer.
V. Network engineer.
VI. Product manager.
VII. Digital copywriter.
VIII. Information systems manager.
Best of luck.

There are 20 IIMs as IIM - Jammu is the latest addition.
The ranking of IIMs are as follows:
1. Indian Institute of Management (IIM) – Ahmadabad.
2. Indian Institute of Management (IIM) – Bangalore.
3. Indian Institute of Management (IIM) – Calcutta.
4. Indian Institute of Management (IIM) – Lucknow.
5. Indian Institute of Management (IIM) – Kozhikode.
6. Indian Institute of Management (IIM) – Indore.
7. Indian Institute of Management (IIM) – Ranchi.
8. Indian Institute of Management (IIM) – Tiruchirappalli.
9. Indian Institute of Management (IIM) – Kashipur.
10. Indian Institute of Management (IIM) – Rohtak.
11. Indian Institute of Management (IIM) – Shillong.
12. Indian Institute of Management (IIM) – Udaipur.
13. Indian Institute of Management (IIM) – Raipur.