Pros
Amazon work groups have great autonomy to work independently and provide superior results. We are empowered via the Amazon leadership principles to place big bets and take calculated risks. Amazon is a technology company. As a technologist, I can think of no greater company to work for. Living and working in Seattle at Amazon headquarters is an invigorating experience on many levels: technical challenges, technical autonomy, decision making clear down to the engineering level, freedom to do the right thing, no dress code, and downtown Seattle culture including restaurants, activities, the Pacific Ocean, and a view of stunning mountain ranges.
Cons
Because it's always Day One at Amazon, there is a lot of chaos. One must recognize this and learn to thrive in the midst of the chaos.