I applied online and was contacted by a recruiter to complete an online coding assessment which 3 basic algorithms and data structure questions that you have to complete in an hour and a half. You are asked to describe in your own words your thinking process and how to came to the solution you gave. You are also asked to give the time and space complexities of your solution. After about 2 weeks I was invited for an onsite interview in Seattle. The onsite interview was similar to the coding test. I was interviewed by about 5 engineers from Amazon, most of the questions were your basic algorithm and data structures and problem solving questions. The interviewers were very helpful and pointed out where I went wrong and also helped in debugging the code I had written. The bar raiser gave the toughest question of the lot.