4 rounds. 1st round was a standard 15 minute HR screening call. second round was a 45 min behaviroal interview with someone on the operations team. third round was a 90 minute interview with three different higher ups across Brex. Final round was a panel interview where they gave you a case study two days prior and asked you to make a proposal. Entire process was smooth and extremely pleasant. Took about a month for the whole thing