I applied through the employee referral program, but never heard back from Amazon about the specific application. Instead I was contacted by a recruiter later for a completely different role. Within a week I had a technical phone screen. I was told to prepare for high-level model discussion that could even include my own experience. Instead, it was a drill of brain teasers and regurgitation of model assumptions that could be memorized. The interviewer also used a screen sharing application for coding that took 5 minutes to load because they hadn't used it before. I was told the interview would be 30-40 minutes, but instead it took 1 hour. I received no feedback except that I did not move forward in the process.