I applied online through the Amazon jobs website. After a few weeks I got an email from a recruiter asking me to have 2 back-to-back interviews on a day of my choosing. The interviews were an hour long each and consisted of questions about basic data structures, their runtime complexities and some basic coding questions. One interviewer asked me one coding question and the other asked me two. All three were fairly easy and standard questions and shouldn't be anything too surprising if you have read some of the other reviews (They were in that same ballpark). After the two interviews concluded I was told by my recruiter that I would hear back from him within two weeks time. I got a response a weeks after with an offer.