The Final stage is 2 hours of technical interviews followed by 1 hour of interviewing with the manager who's team you may be joining. First technical interview was not too difficult. It included improving code and solving an easy to medium-level leetcode type of problem. Second technical interview was difficult. A medium to heard leetcode problem. There were also questions about architecture and design. Given some web page, what architecture would you have used? What design patterns? You're expected to give detail on some aspect of web design.