After sending CV and Cover Letter, had a 15 min HR interview. Recruiter was very nice and it felt more like a chat, got asked only a couple of basic questions (Why Elixirr, why this role etc). Then got invited to an AC, which consisted of 2 group case studies, where you got given a case study to do in 30 mins and then present it + Q&A for 15 mins. Then one by one we had to present for 5 mins about something we got emailed a week in advance and had time to prepare. Got to speak to analysts and consulatnts throughout the day, and everyone was incredibly nice and friendly.