The realisation of Neptune in Leo is almost always bound up with a creative or inspiring public function, even when the profession officially has nothing to do with art. Think directors, actors, singers, conductors, museum curators with a distinctive eye, people who stage large events, charismatic teachers who turn a lesson into a small performance. It can also mean spiritual guides with a stage gift, the people who lead women's circles or run meditative groups, whose work rests on personal presence quite as much as on its content.
A well-realised Neptune in Leo tends to choose fields where inspiration and form can be joined. They want material that holds both technical discipline and the room for an image in which that discipline comes alive. That's why such people so often land in directing, in the staged genres, in teaching others how to create. They love to cultivate, to grow talent, and it's frequently their own students who become the next generation of names worth knowing.
Money, in this kind of work, doesn't arrive at once or evenly. The early years are often filled with investing — in the image, in materials, in self-promotion — and the income only catches up in maturity, once a reputation begins to do the work by itself. The difficult zone is the anonymous corporate role, where there's no face and no link between what's made and one's personal standing; in those posts people with this placement tend to burn out quickly and leave for a project of their own, a studio with their name on it, or teaching. I'd put it this way: it serves them not to resist this pull towards a stage, but to build a career around it from the start — otherwise the family becomes the stage, and the people close by have a hard time of it.