He probably memorized data structures and algo's interview questions and got a job at Amazon. He got ahead by sucking up to his boss and being political. His boss is probably an Indian too who sucks up to his boss and so on. But that is okay, as this company is stable and they just need people to slog. In india there is a term "sangkamya" that means someone does what they are told to. No questions asked. Indians are very disciplined and years of slavery under British has conditioned us to be good workers.