Amazon Machine Learning Engineer interview questions

The Hiring manager contacted me on LinkedIn. The team seemed really excited by my profile and I had the first round of interview with the team lead. It was purely ML based questions and I was able to answer them all. For the second round they send me an online coding challenge, which didn't relate to ML, was more about datastructues and algorithms. I did decent on that challenge but didn't get a call for the next interview round. I was assuming they would give more weightage to my ML skills rather than some optimizations I might have missed on coding challenge and was pretty disappointed to not hear back.

They contacted me with detailed information, job descriptions and requirements. They then arranged the interview time with several email exchanges. Overal, the process was very smooth and easy going. Happy to had such a great experience with high tech company.