[brundolf]

It's one thing not to get training on standard technologies that are publicly documented; it's another thing not to get training on internal systems that you can only hope to decipher through reverse-engineering. I've seen both, but the former is much more common. I don't think you can get away from that version.

If the latter is your main problem - i.e. you're willing to self-teach where material (like Udemy courses) is actually available - then one option is to look for a gig where you're the one creating the systems from scratch. That removes a big part of the problem, because you're the expert from day one. Getting into a startup at the ground level is one way to do this; working for a company that's always creating demos for other parties, like a design agency, would be another. (I also have a pet theory that enabling this kind of thing is a main motivator behind the microservices push)