Canonical's infamous interview process, in my experience, was exactly as described online by many others. The recruiters jerk you around for a minimum of several months before hitting you with the most copy-pasted rejection letter I've seen. Pushed my way through the ridiculously long twenty question written "interview" portion in which half of the questions were asking about performance in high school, for some asinine reason. Got dropped after taking some ableist spacial awareness/reasoning test called the Thomas GIA (mind you, before I had sat down with any real human being in this entire process). Guess my ability to flip the letter R in my mind wasn't good enough to be a programmer for the world's worst Linux distro. My tip to interviewees: stay as far away as possible from Canonical.