HR contacted me during the beginning of February from Linkedin. After a brief introduction. I was given a first-round telephone interview. The Hire Manager asked me a lot of EU project questions because I'm now working in the United Kingdom. He also expect to know my system architecture background. After 30 minutes ' talk, HR informed me that I will go through the screen phone interview. A principle engineer contacted me and asked the questions including an algorithm and KVM / Xen related challenges.