They don't care if you are sick, if you work on weekends, if you work in the evenings to get things done. Actually nobody cares about you as an individual. Fine, they pay pretty well for brazilians to work there but that's only a way to save money and not pay the U.S salaries for engineering. Besides not respecting you as an individual is pretty rare that they will respect you as a professional. You can get laid off without previous notice with the excuse you are not "performing well" aka having no personal life. If you are a workaholic and like to say yes to everything management wants that's a great place to work. The co-founder has no saying and nobody dares to say no to the CEO. The best thing i did was leaving the company.