First there is a phone screen interview. Then you are invited to 'super day' which consists of 3 interviews and 1 technical interview. There were other candidates at the interview, but it is not a group interview. 3 interviews are normal interviews with different people in the company (mostly people in the position you are hiring for, and one that is a senior in the company). Technical interview is just describing/answering questions about a graph.

Penultimate case study: overall a great experience. Communication was very clear, the interviewers were helpful and passionate about their field, which is always great to see. They answered all questions honestly and I found out lots of great things about the firm.

Nice interviewers, I was moved through the process very quickly. I then never heard from the recruiter, I had to call them to find out when they'd make a decision by as I had offers elsewhere. I ended up never hearing back and found out the job had been accepted because the person who took the job made a post on LinkedIn about it. I enjoyed the actual interviews, but getting ghosted just to find out the job went to someone else because of LinkedIn never feels good.