Ideally looking for responses that involve some kind of programming expertise, but I'm leaving the question sort of open ended to see what else is out there.
Also paramedic.
And, of course, Paratrooper.
I think things like building marketing websites, landing pages, contact forms, etc is like that too on the lower paid end of the spectrum.
I'd caveat that "lots of skill" (ala brain surgeon) is typically not the common denominator -- rather niche skill.