X Site Reliability Engineer interview questions

Twitter contacted me on an online recruiting platform and we planned our first call on Hangout. The recruiter did not show up due to transportation problem so we decided to rescheduled. The second time, recruiter did not show up, again due to "connectivity issue" and we decided to rescheduled, one more time. The third time, as you can guess, recruiter did not show up due to "multiple booking at the same time". So I guess I am not going to loose my time with Twitter anymore.

Recruiter reached out to me on LinkedIn. There were three interviews. The whole process took about 4 weeks. The first was an HR phone interview where she asked me about my background and some basic networking/Unix questions. The next round was a phone interview with hiring manager where he asked questions about my background, technical interests, projects etc. I was given a take home coding challenge. The challenge was a lot of fun to code and ended up finishing it in a couple days. A week later got a call from HR saying they liked my solution and would like to interview me onsite. Onsite interview was a set of 3 interviews of an hour each with 2 people from the team at a time. Interviewers were friendly, smart and overall was a very pleasant experience. Questions ranged from coding, OS/networking to scalability/architecture. They made an offer a week later.