Amazon Data Scientist interview questions

2 phone interviews and 1 onsite interview and the onsite interview includes 5 small interviews with different people. Called out of the blue, asked if I'd be interested in interviewing. Still not entirely sure how they got my name. Had first phone interview the next week, asked no personal questions, all technical in nature. Total of 3 phone interviews and an in-person trip out to Seattle.

Onsite interview in the Alexa team's Boston office. Each interview is held by 2 persons: the manager and the less senior person. They are really nice and patient in asking questions. Half of the content is about the Amazon's leadership principle questions, and the other half about basic concepts in stats, data modeling and coding. It was more like a technical conversation than an interview.