I applied through an employee referral. The process took 4 weeks. I interviewed at Amazon in Feb 2016
Interview
I had two OAs(online assessments) and a video chat. Each OA took one to two hour to finish. You have to make sure your camera works because they may take pictures during the process.
Interview questions [1]
Question 1
In OA1, I did a lot of logic reasoning problems and one programming question. in OA2, one part is work simulation and the other part is programming of 2 problems. One problem is to find the minimum path sum from root to a leaf in a binary tree. The other is to find out if there is a path from a starting to a destination in a maze, where there may be obstacles on the way.
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.