Amazon

Amazon is fast-paced. You are working with some amazing customers doing amazing things with technology, and you are in the thick of it every day.

Internal systems are a joke. Work-life balance is largely non-existent. The pace is unrelenting and, above all, unrewarding. Employees are disposable assets (there's a reason for the very high turnover, which leads to a lack of continuity). Perks are non-existent, and "bonuses" are in the form of RSUs that don't vest for 2 years (and forget about pay rises).

Take a long look at the internal IT systems... they're a joke.

Look at how you reward people for working themselves into the ground.

Customer Obsession and Frugality is one thing, but at the rate of turnover, there's no continuity and no long-term ownership. Eventually, the house of cards will collapse (as it's starting to in AppStore).