I have to say that over my 20 years of experience in engineering, I have never seen a worse candidate experience than Canonical. After spending probably 20-30 hours of interviews, tests, prep and jumping through hoops with people, getting a generic rejection notice with less details than most automated filters wasn't just a punch to the gut, it was actually incredibly insulting.

In fact it was such an insult that it has turned me off ever using any Canonical products or services and I will ensure in the future that none of my organizations use them either.

There is a reason Canonical has so many unfilled, open positions and it isn't because of their meteoric growth.

(C&P from another posting)