Importance of the average mark

I'm doing my master's degree in computer science in a university in Germany. Unfortunately, I'm not one of the best students; my average mark will be around 2.8.

How important is the average mark when applying for a job?

I know, there are other important factors, such as work experience, etc.

But I'm afraid that if another applicant has an average mark of, say, 1.8, they will just ignore my application.