I applied online. I interviewed at Canonical (Thessaloníki, Western Macedonia) in Dec 2020
Interview
First interview was with HR person with mostly generic questions like salary expectations. Second one was with a lead engineer and was mostly technical regarding (among others) features of the programming languages that were required for the job role.
It's an extremely long process that includes standardized tests, take home assignments, and several rounds of interviews. It was at least 5 rounds long and you interview across different teams.
I applied through other source. I interviewed at Canonical (London, England)
Interview
They have a really long, tiring interview process. The first round was a written interview where I had to answer like 15 questions. Then a coding interview with 1 hour time that I could do anytime for 2 weeks. Then I had to take a personality test and they totally ghosted me.
The first round is a bunch of questions like 30 or so where you have to describe your expierence, personal and academical information. Then there is a asynch technical interview and a psychology test.