ZuckMuckerberg

10am–6pm work schedule. That's ~7 hours of work with ~1 hour of lunch.

Datapoint: I'm currently making £145K a year in the British office of a FAANG company as an E4 engineer 2½ years after graduating college.

I'm able to work 10–18 most days, but I do have to have some results eventually. I know of people in this office who got dismissed for not having good enough impact.