I do work in infrastructure and never had to work out of working hours unless I was oncall. Our on-call rotation is 12h a day for a week, because we have an oversea team taking over. I get oncall every 5 weeks.
You can absolutely find places with good working condition and with a good salary
In New York I am finding the expectations getting higher and the salaries stagnating, to the point that I'm considering taking the plunge into consulting.
There's not a lot of infrastructure job talk on HN as everyone is a software developer or academic type.