Amazon

• There are teams which provide a great learning opportunity (usually given you can get the ops and other tasks done and then spend a lot of extra hours learning).
• Compensation is nowhere close to top-tier but much higher than average.
• It can be a decent situation if you're very lucky to land on a good team (i.e., < 60 hour workweeks, not getting paged every single night during on-call, and management treats you humanely).

In general (i.e., I and most of my colleagues generally estimate for > 50% of the company):

• Managers use unjustified fear to motivate subordinates and way too often harass subordinates.
• Generally need to work > 50% of the time.
• As you get closer to vesting of most of the stocks, the likelihood of getting PIPed (fired) skyrockets.
• Cut-throat culture and lack of collaboration within teams (due to stack-ranking and forced firing). Teammates are reluctant to share tribal knowledge with others to protect their jobs.

Take care of your employees, otherwise, you might find yourself in a situation that can prove difficult to climb out of once too many engineers learn of the company's reputation.

Other than the treatment of employees and bad reputation being a major issue, many parts of the business are great and likely to do well in the long-term.