Pros
The company is dog-friendly and the dress code is casual (see ya, high heels!). The expansion/growth strategy is staggering and it's kind of cool to get to go into all the new buildings in Seattle.
Kontras
There are very few perks (just three, actually: 1) dog-friendly, 2) casual dress, and 3) free tampons) and the total benefit package is lackluster. Most work spaces are "high density", which means an open area crammed full of desks, such that it's too loud to even have work-related phone calls from your desk. Your compensation package will be stock-rich and base poor. Do not expect annual base increases to even match typical cost of living increases. A 2.5% increase is rare. Instead, you might get stock grants for two years in the future (but will you be able to stay long enough for vesting?). Amazon does not believe in motivating behaviors through any sort of positive reinforcement.