For jobs dealing with children, autistic or otherwise, you pretty much are limited to teaching, tutoring, babysitting/day care, or pediatric healthcare.
If you just like dealing with us people on the spectrum, go into IT or the game-making industries. Seriously, those fields seem to attract the high-functioning Autistic people like horseshit attracts flies. Sure, we may not be children, but we sure act that way sometimes :D
Thing is, it’s easier to get qualified/certified as a teacher than as just about anything in the medical field much beyond changing bedpans. And even many people who are trained with a decade or more of schooling still don’t have the training to deal with us.
Also note that there are a wide variety of autistic people. Some of us are merely a little eccentric while some of us are outright weird. Some of us are calm while some of us throw severe tantrums over the least little provocation, even something as simple as using the wrong fork or hearing a high-pitched sound that most adults cannot even perceive. Some of us are actually quite chummy while some of us are annoyed by the mere presence of people and others so trapped in their heads that they won’t even know that they are not the only one in the room. You may wind up with a talkative kid who is obsessed with dinosaurs but otherwise fairly normal, or you may wind up with one who likes curling up in a ball and rocking gently and won’t even respond to your voice.