Weak managers and awful life-balance
Whether you will love or hate Amazon will depend on your manager.
While some says that Amazon is innovative and looking for long-terms solution, I got expressly told to look for the lazy short-term solution and stop looking to innovate.
The work life balance is awful. You will mostly eat at your desk in frond the computer.
Moreover, HR are stronly on your manager side and will block you if you try to move between jobs without your manager consent.