Amazon Software Engineer Senior interview questions

Initial Call by a requirer, a technical phone interview with an engineer (code on HackerRank), on-site interview with 4-5 engineers. Questions about data structures, algorithms, and system design. There was also bar raiser and the end which asked a typical system design question.

First it is online assessment, including a few coding questions. Then there is 4 rounds of onsite interviews, with coding and system design, which takes about 4 hours total. The interviewers are all very nice.