This write-up tries to list down opportunity after completing Bachelor in engineering. If you have not got good offer in campus placement or no offer at all, no worry. World is big enough to provide multiple nice opportnities.
Centre for Development of Advanced Computing (C-DAC) is the premier R&D organization of the Department of Electronics and Information Technology (DeitY), Ministry of Communications & Information Technology (MCIT) for carrying out R&D in IT, Electronics and associated areas.
C-DAC conducts two batches (starting in February and August) of Post Graduate Diploma programmes of six months duration during the year:
http://www.cdac.in/index.aspx?id=education_training -> Official website
It includes opting for M.Tech/MBA from reputed institutes in india. For MTech, there is commonly known GATE exam. Apart from this, admission to few reputed institutes like ISI MTech, JNU MTech are done by thier own all india enterance exam.
ISI MTech is possibly the only MTech in Computer Science programme of India with intake of students not only from Computer Science but also from any branch of Engineering, as well as Mathematics, Statistics, or Physics.
http://www.isical.ac.in/~mtechcs/
https://en.wikipedia.org/wiki/Graduate_Aptitude_Test_in_Engineering
https://en.wikipedia.org/wiki/Graduate_Management_Admission_Test
https://en.wikipedia.org/wiki/Common_Admission_Test
It includes opting for M.S. /MBA from reputed institutes abroad. A student needs to select if he wants to do Master in Management or Engineering.
https://en.wikipedia.org/wiki/Graduate_Record_Examinations
https://en.wikipedia.org/wiki/Test_of_English_as_a_Foreign_Language
eLitmus Evaluation Private Limited is an Indian company that helps companies in hiring employees for entry-level jobs.
It conducts pH Test or Hiring Potential Test. Companies use pH Test as a criterion for hiring employees. The test consists of three parts- the Quantitative section, the Verbal section and the Reasoning section. Results are declared in two formats: percentile score and total score.[3] Companies call test-takers for interview on the basis of pH score and their own criteria.
https://www.elitmus.com/
https://en.wikipedia.org/wiki/ELitmus
In government sector, there are openings for navratna companies, ISRO, DRDO, IES, banking IT services.
There are various portals which list upcoming exams in these organizations.
https://en.wikipedia.org/wiki/UPSC-Engineering_Services_Exam_(Indian_Engineering_Services)
http://www.drdo.gov.in/drdo/ceptam/ceptamnoticeboard.html
Personal experience