I will just add another +1 to say it's not common to work 60-80 hours per week in the US tech industry. It's not unheard of, and some companies (Amazon) are notorious for expecting that of their employees. But most of the time what you will see is that most people work 40ish hours (some weeks a bit more, some a bit less), and only a handful of colleagues with an unhealthy relationship to the job will work 50+ hours per week. Management doesn't generally expect people to do that, though of course bad managers do exist and can make your life miserable.

The only time I've ever been expected to put in those kinds of long hours was in case of an emergency. Stuff like, a natural disaster hit the company's primary data center so they needed to be all hands on deck to get services restored. But it's definitely not common day to day, and even in case of emergencies the company generally gives you a little something (extra time off, a bonus, whatever) to compensate you for the long hard hours you had to work.