Why are your grades important?

Below is the formula used by TÜBİTAK to rank and filter job applicants before an interview:

Let's say your Turkish university exam rank was 50000. Than you would have to have a CGPA of at least 3.2 - 10000 / 50000 = 3.0 (75%) to be even considered for an interview. Otherwise it won't matter how good an engineer you are. The lower your university entrance rank, the higher your CGPA should be. If on the other hand your rank was 500, you wouldn't need to worry about CGPA because 10000/500 = 20 which satisfies this criteria more than enough. As you can see, the exam rank has the highest effect. But that stage has long past for most of you, so concentrate on CGPA.

If for example 5 people are to be hired, usually the first 4*5 = 20 people are selected. After this initial selection, you move on to the interview and there your engineering skills are more important than your CGPA. But to get a chance to show your skills, you need good grades.

If you want to maximize the number of job interviews, stay above a CGPA of 3.0.