First, through a recruiter, phone interview (screening). Then another a phone interview with an HR person there very similar to the screening. In both interviews your basic knowledge is tested in Networking, Security and Linux. I finally had an official interview with the folks there.

The recruter contact me over LinkIn and we've spoke about the position and some few basic questions in order to see if you are qualified . After that an interview with 2 team leaders with more deep in question mostly about networking and ciber security (firewalls/ how do they work and different types). After you pass your first interview , you get another one with the manager and the team leader of the project you will be assigned to where you mostly talk about yourself and also a new round of questions (keep in mind that some questions may be the same as the first interview (so if you did not know a question at the first one you may have a chance at the secound interview). The interview is easy in my oppinion ( for me it was a a bit harder as i was not working in the field ).