I applied through a staffing agency. The process took 1+ week. I interviewed at Essensium
Interview
After being contacted by a head hunter. They invite me to a technical interview. The interview was very technical (Linux internals, protocols, ...) and leaded by two real experts.They asked questions until you cannot answer, it is on purpose to see how you behave when you don't know the answer.
Interview questions [1]
Question 1
You are chatting with a friend on skype. Explain what happen with as much details as possible (socket, video encoding, scheduling, network protocol, ...). During your explanation they stress some point.