Applied directly with the firm. Initial HR phone screen, second round phone interview (all personality type questions and questions about work history), final round all day on-site interview with ~6 different people (1v1). They brought you to the lunch cafeteria in the middle of the day to interact with current members of the team and paid for your food.

A 30 min screen call, then another one shortly after with the hiring manager. The next step would be a panel interview with five managers who collaborate with you on the role and your direct manager