there were a few rounds of behavioral and technical interviews, including the one with the big boss, with 1 manager and with 1 future team member. online and on site interviews. not very difficult regarding the technicals as long as you are familiar with factor models
It was a one-on-one interview with a prospective boss. Questions were related to finance and accounting knowledge. The interviewer was quite friendly. Make sure you have the industry-wide accepted knowledge memorized.