i could see an infj making a lot of money through something authentic to them, like a book, a start-up, a calling they truly love, etc. but i think this is rare. jobs that appeal to an infj are not the type that our society values and pays accordingly imo. if i were to be truly authentic to myself, i would seriously consider living in poverty and help the poor and destitute. but i like my cats and they are expensive, so i work.
any job that pays well is going to involve unhealthy amounts of stress. are there exceptions? sure. there were times when i made a lot of money, but was unable to turn my head because my neck was stiff from all the stress i was internalizing. the trick is to find a healthy medium where you can get paid a living wage while not wanting to slit your wrists going to work on a daily basis. also, being authentic to your introvert-ness is also important. my current job is the first where i work primarily around introverts and although i deal with the general public, i only have to deal with them in a structured type of way and for a short time period. i can’t tell you how much of a difference this makes.
also, i couldn’t imagine being at the same job for years. i was a school teacher for 8 years and barely made it out with my sanity. i wonder if needing to hop around is an infj thing. two years is a good time period for a job i think. having new routines and working with new people is important.