Quite a lengthy interview process (about 4 or 5 different rounds) but the recruiter was very efficient and provided lots of information, and was happy to answer any questions. The case study round was the hardest as you aren't prepared for what the case study will be about and of course you don't have any training, so it's a very selective process. Overall the interview experience was positive, but they take the case study round very seriously. They were also happy to provide you with feedback, but I was told how I went wrong anyway, so felt that this wasn't needed.