Maybe they could use this DDoS attack as their 17th round technical interview. Any candidate who successfully mitigates the attack would then make it to the 18th round. Win win!
I got all the way to round 53, but it turned out that one of my semiaquatic tetrapod ancestors from the Carboniferous Period didn't perform on land as well as they would have liked, so that was it for me.
Is their interview process Dungeon Crawler Carl? Do you just apply to work at Canonical, and at the 3rd interview you get to pick what position you're applying for?