Amazon Applied Scientist interview questions

A phone screen involving some background and a couple coding questions, first talked through and then to be completed and sent in to be reviewed by one of the applied scientists on the team

Interviewed for a machine learning internship in Seattle. Process took one week. I got an email from a recruiting coordinator to fix a time for a technical interview. I had a first phone interview after 4 days. Questions were about my research and technical ones were asked in the context of a technical problem where I was asked to improve a recommender system given a specific training dataset. I received a second email from the recruiter for a second technical interview which was similar to the first one. Both interviews were fairly easy and interviewers were very nice.