[forgingahead]

I've said this a few times in other comment threads on HN, but be careful with this mentality. Any hiring manager who sees you as a person who always "watches the clock" downgrades you to someone unreliable for the team, and probably added to a list of "first people to cut" when the opportunity or need arises.

If you are the only person in the world with your skillset, you can maybe get away with this. But "web developer doing frontend work" is one of the more replaceable jobs out there, and it's only getting more competitive.

Don't underestimate the hunger of others in the marketplace. Just because you have a comfortable setup now doesn't mean this will always continue.

[whatshisface]

I assume you're talking about staying a little late during an emergency, balanced out by leaving a little early when nothing important is going on. SpaceX is talking about 80 hours a week baseline. I understand your platitudes about not being a clock watcher, but if you go to work for spacex expecting to merely not watch the clock, you will find yourself unpleasantly surprised. If we're talking about the average hiring manager, the average hiring manager could not handle SpaceX hours.