I applied through a recruiter. The process took 1+ week. I interviewed at Amazon in Jan 2013
Interview
Got contacted by a recruiter. They seemed interested in my background in computer vision and machine learning. They had me do a small programming exercise over the phone. Then I went in for an in person interview. It was frustrating because they could not say anything about what I would be working on, other than I was a great match.
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.