4 hour Interview Loop -- Focused more on behavioral questions to see if the candidate has all of Amazon's 16 leadership principles. They are weirdly cult-like about this and ask about any real-life examples that demonstrate these principles. As a candidate, you are supposed to answer these questions in the STAR format for best results and make sure you have strong examples.

Each interviewer is assigned a set of leadership principles to check off in your examples, so while the questions may sound they are interested in you, they really are not. Be really simple with your stories.

Design an algorithm to find the most common boss between any two employees in an organization. You can design the data structures however you like to make this happen, and there's no limit on how many employees are under a supervisor.

Design a system that aggregates temperature sensors across the US and displays this aggregate data state-wise on a web portal.