Amazon System Development Engineer interview questions

1 phone screen and then 4 hours long technical + behavioral interview. Asked 2 coding questions - leetcode. Every interview had around 20 mins behavioral questions - leadership principles. Study trees graphs, data structures, oop concepts, networking, operating systems, do as much leetcode as possible. And solve system design questions

Interview process went fairly quick. I applied online and heard back from a recruiter within a week. I had completed two phone screens, with a coding session on each. Then I had the full day “on-site” virtual interview due to COVID-19. I felt that the process went extremely well, but was told that the “bar raiser” said no to the hire and I was not given an offer. I prepared more for these interviews than anything else I have done before.