Made to do online test, consisting of 2 software dev questions (examples are on their website and I believe are freely available/open source). If you want to get a feel for how the interview test will be, you should just do the practice test. I believe it was a generic FizzBuzz question.
Interview questions [1]
Question 1
How do you believe you could integrate your skills into our work environment?
Interviewed for silicon team. Have only been asked about the domain specific knowledge in 1st round and system design in 2nd round and C coding in 3rd round.
The interviews were 50 mins each.
First round with hr screening - 2 leetcode questions then hr manager screening then the loop which consists of 4 interviews each an hour long. The 4 interview questions they asked where three medium leetcode questions. And one system design interview question about how to shadow deploy a test software to millions of users.
Recruiter reaches out after applying through Amazon careers, no referral. Had an initial OA, then after a month had four rounds in two days - three coding one system design. Each round had 30 min behavioral and 30 min coding.
Interview questions [1]
Question 1
Questions were mainly hashmap, sliding window and interval related.