I'm a good general developer, but what I seem to be much better than others in is refactoring legacy hell code into decently organized and workable code, withou

I'm a good general developer, but what I seem to be much better than others in is refactoring legacy hell code into decently organized and workable code, without introducing bugs. I sometimes dream of becoming a highly paid Code Janitor that swoops in and saves your organization from starting over from scratch. But I don't see a way to get into that field. For one thing, it doesn't even seem to be an existing "field".