It can be drastically different from team to team.
After I joined Amazon in 2007, I referred a friend from Uni who joined a few years later.
I had a fairly laid back experience - after a good start, I became depressed and burned out, but somehow none of my managers seemed to care all that much since I was at least getting some stuff done, until I finally got put on a PIP several years in - which I think was probably deserved, although the handling around it was crap. And even then, when that manager moved to a new team, my new manager told me I was doing fine and not to worry about it.
My friend, on the other hand, who was the most diligent and hard working of my entire friends group in Uni, was assigned to a different team a few desks over. She fell afoul of stack ranking (the idea that you should rank everybody in a team and fire the worst) and was pressured until she quit.
I also heard a bunch of horror stories from devs across the company - unreasonable deadlines, regular Sev-2s and firefighting when on-call, a manager evading blame for a disastrous project launch and dropping it all on one engineer.
I think the main problem that I saw was that there wasn't much training for managers on how to be a good manager, and bad managers never seemed to face consequences.
I finally quit after eight years (funnily enough, after ending up working for the manager who made my friend quit) and I'm a hell of a lot happier nowadays. Amusingly, I'm still facing tight deadlines and sometimes random overtime, but I have a great boss who is willing to fight against these things for me, and that makes a big difference.