The best interview process I have ever participated! Very fast and organized. I applied through Amazon's database and got contacted by a recruiter one month later. They sent to me a link to some algorithmic questions which were Leetcode medium/hard, I had 90min to solve 2 of those questions. After this test I got a phone interview that was scheduled really efficiently, first there was a classical programming interview question and after one Leadership Principle question. The interviewer decided by himself to keep talking to me after the time was over and he asked about several past projects. The onsite step was great, travel was arranged really fast! I can't say the questions but I can say the topics they covered: first interview was a graph question, second was a divide and conquer algorithm, third was an API design question and the fourth was on Maps and Queues. Every interview had questions on past experiences and Amazon Leadership Principles. The next day I got a call from the recruiter with an offer conditional to background check.