Pros
You get to work with the best talents around you. SDEs/SDMs are always willing to share information and help each other towards work goals. Operational process is transparent to all and hence there is less toxicity or biases. Leadership Principles are followed religiously and therefore serve as guiding light. Work hard , deliver and you will grow otherwise it is not easy to sustain in the fast-paced environment.
Cons
it is not a 9-5 job (and your compensation sort of dictates that) and you are expected to deliver your best so be prepared to hustle and transform yourself into your better version. Otherwise, this is not your place. No-frills in terms of misc benefits such as free swags/lunches/events as Amazon practices frugality in its operations (one of the Leadership Principles). So don't expect such pampering.