COBOL legacy systems in finance and government are somewhat of a meme. However, I've never actually met a single person who's day job is to maintain one. I'd be curious to learn what systems are you working on?
Followup question: what’s it like to write COBOL? It’s so ancient as this point you never hear anyone actually talking about what the developer experience is like. How performant is it? What features does it have (or not have)? How bad is it really?