So it should come as no surprise that aspiring Amazon employees have to answer several difficult interview questions to find out if they have what it takes to be hired with the top tech company.

You should know Amazon's leadership principles and craft "career stories" that fit into them, a senior manager at Amazon Web Services said.

Business Insider sifted through hundreds of Glassdoor interview reviews and found 21 of the toughest questions that Amazon has asked its candidates in the past year. ‘Amazon is a peculiar company.