If one of your characters has a job description you’re unfamiliar with, make sure you find out enough about it to be convincing. Some years ago I was beta reading a book where the protagonist was a computer programmer. Having been one myself, I was familiar with what the job entailed and clearly the author was clueless. Find out as much as you can and then have someone familiar with that profession read it over for a sanity check. People usually love to talk about what they do and their knowledge, a resource you shouldn’t hesitate to tap.
Inaccuracies in this area suspend credibility for knowing readers and not only throw them out of the story but out of your fan base as well. There are some areas where your imagination shouldn’t be allowed free rein.