Believe everything you read here! Had about 10 calls with them in less than a month (a lot of repetition + case study that took dozens of hours to do) followed by silence and then a rejection with no explanation...
long, 6 interviews to get rejected after a personality test as the final round. The second round was a technical assessment, after which I had 4 more rounds with different people asking me pretty similar questions.
It was informal, quick and friendly, interview was around 30-45 minutes. Interview was given before the personality test. Personality test was quite exhausting, long and difficult. Replied to emails very quickly.
First step HR interview was a good experience. Recruiter was very friendly. 45min long - talking about your motivation for the role, your background, how you align with the role. I didn't get to the next stage because I didn't show enough alignment with the role.