Matrix comsec usually has recruitment process each Saturday. I was interested in embedded systems so I decided to apply for the job there. Firstly, there are 2 written tests, one on general aptitude and another on C language. If you clear the test, next comes the technical interview, which mostly concentrates on C language and little bit on C++. If you pass that interview, then comes 2nd round of technical interview, and it can be on any topic you studies during engineering, of course, electronics. If you pass this one, then the final HR interview is there. I failed in 2nd round of interview, because I didn't know much about networking concepts, they weren't taught at college for sure. You must have very nice understanding of C language, then only you may get hired in this company. Luck is always needed at interviews, so best of luck!