Pros
Amazing learning experience, have never accomplished so much. A white collar boot camp. Work with incredibly talented people on interesting projects. After working here will be much more effective and efficient in any future role. Focus on customer is absolutely true and permeates every aspect of the company.
Kontras
Demand more than can possibly be delivered with no acknowledgement of achievement. Brutal culture, extremely political once you get into the management ranks. Many "manage up" with no development of their people. Little to no ability for work life balance. If your career is your top priority, this is the place for you. If not, stay away. Never worked anywhere with such poor morale and lack of concern for employees. Basically, Amazon is the evolution of the corporation. Crappy benefits, no perks, drive workers to the breaking point because there's always someone new to take their place.