Canonical is known for their relatively long hiring process in which you don't see a human before passing 4 time consuming steps. Those steps include: - Passing an application evaluation committee which decide if you can continue - Filling a long written interview with about 40 to 60 questions. Some questions focus on the role itself but more than half of them are completely out of the scope (e.g. average grade and rank in native language in high school, what your friends will remember of you etc.). Even senior level roles are getting those questions. - Passing a psychotechnique test to grade your ability to take quick correct decisions. I don't see the point of such test unless you apply to a pilot or trader role, as an engineer is never facing a situation where a few seconds of thinking can have drastic impact, so very confusing. - Passing an easy technical test on a website which allow looking for internet resources to answer. All those steps will take you 8 hours to complete (the written interview is especially long) and you will never know what score or result you have. They don't give rejection reason after spending all that time applying.