I had an interview with socgen for two rounds for ga graduate trainee roles, interviewed with the entire team from junior analyst, VP to MDs sitting across different office, testing in behavioural and technicals questions and also brain teasers
Interview process is seamless and straightforward. They are clear on how to prepare well so that you can succeed and do your best. Very responsive and give feedback well. You will know if progressing very quickly
Before an interview invitation, there's an online test and assessment sent by email. Several rounds of assessments. First answer questions in MC, then in game form and testing about analytical skills, cognitive ability stuff etc.