Amazon

Fast-growing company. Opportunity for advancement (for certain personalities). Excellent compensation. Interesting technology. Good business (not technical) management.

Unrealistic deadlines lead to sloppy development practices. This leads to a higher than necessary operational burden.

Conflicting goals: "Why didn't you get this done on time?" "Because I was up all night fixing an operational problem." "You need to work harder." "I was up for over 20 hours straight; I need sleep." "You will be terminated if you don't step it up." "Huh? A 20-hour day isn't enough."

No respect for simple human factors. If you need to sleep, don't work here.

Account for simple human factors (like sleep) before making threats to terminate someone.

If you ask someone to put in a 24-hour workday, then guess what? They will probably be coming in late the next day. They might miss a meeting or two. And if they have a big deadline that week, it will probably be missed.

5-day, 7x24 on-call rotations are ridiculous. Do what most other organizations do and use shorter rotations.