I sometimes wish my employer didn't know that I can write Python code, so that I would never be assigned front-end work. I prefer to deal with programs that take lists of numbers and return lists of other numbers.
(I'm not as bad as one guy I used to work with, because at least I accept ASCII input. His backend code only took binary-encoded configuration files for no reason I can think of except maybe to punish anyone except himself who tried to use it.)
You could do templating with jinja, or do some data visualization with bokeh. I think there's also something called dash. I don't know much about any of them though.
I mean, python has pickle and people use that to store config. It's a weird practice, and totally unsafe, but it works well enough. This wouldn't be that different.