I applied through an employee referral. I interviewed at Red Hat
Interview
Each group has their own process. There is a round of interviews that usually is 6 or more. There maybe a technical presentation or hands on exercise. It is very technical for technical position. You can not bluff your way into a job
Interview questions [1]
Question 1
Prepare, present and answer questions on a topic of your choice. There will be someone in the room who probably knows more than you and will push you.