I applied through an employee referral. The process took 1 week. I interviewed at Amazon (Seattle, WA) in Feb 2015
Interview
Two rounds of interview with 2 people. Each one takes 1 hour. One with a Chinese and another one with an Indian. They do mostly background check and ask questions about classification models. The questions are not hard. The interviewers are definitely friendly and do not put pressure on us. It takes about a week to get the interview results.
I had a zoom call with the hiring manager. I was asked technical questions during the interview, such as "How do you compute the conditional median of a set of data points?"
Interview questions [1]
Question 1
If u ~ Uniform(0, 1), what is the distribution of -log(u)? Solution: Expontial(1).
Five interviews, all had behavioral components, three coding questions, one system design question. The behavioral questions were of the form "Tell me about a time when..." and were meant to reflect Amazon's Leadership Principles.
Interview questions [1]
Question 1
Tell me about a time when you were unhappy with the status quo
Pretty fast and well-organized interview process. Scheduling was easy, communication of different interview expectations was clear, and feedback came quickly after each stage, which made the overall experience quite smooth.