I applied through college or university. The process took 1 day. I interviewed at e-con Systems (Chennai)
Interview
interview process consists of 3 to 4 rounds
1.written test(puzzles)
people shortlisted from puzzles round will alone be allowed to write
written test(software)
2.written test(Hardware)
3.Techinal interview puzlle
4.Hr interview
you will be shorlisted in Hardware or Software or even both based on the test results
In Technical interview you will tested from basics to recent technology concepts and complete knowledge on C language and should be able solve some puzzles.