Overall pretty formal 2 stage interview process, initial application, first 30 minute interview, second 2h interview, phone call whether or not you got it. The second one is usually with 2-3 different people 30-45 minutes each.

First round 30 minute screening, second round 2 hours, 3 interviewers. Not super hard by any means but so many behavioral questions and sometimes niche behavioral questions that got to a point where it is difficult for an undergrad with limited experience to answer. Interviewers were friendly however and took the stress off.