I work in a museum adapting internationally touring exhibitions to align with their host communities. It’s a great career - there’s travel, I get to see behind the scenes of museum collections, and I get to study other cultures as a job. I do get paid to match the fact that I work for a charity.
My background is in the museum sector, which you can get into either through a PhD in study of a relevant field to the specific museum, or through a graduate program in museum/ conservation studies (which is what I did).
So far as I can tell, there are only a handful of people that do this job globally, which I suppose makes it lesser known!
As a dual citizen, you are required to show your passport if citizenship for the receiving country - I have dual citizenship and it feels weird to show one passport to get on a plane and another to get off, but it’s what a customs officer will ask of you when you arrive.
Since OP was never an American resident or paid taxes, he or she shouldn’t need to file taxes or be flagged on a system for anything anyway.