One thing that’s important if a novel is going to sound convincing is for the occupations of the character(s) to sound authentic. I remember beta reading a story many years ago where the main character worked as a computer programmer, yet everything about it was inaccurate. I have done some programming before and immediately recognized that the author didn’t have a clue what she was talking about. That definitely did not make the book credible much less impress me with the author’s dedication to accuracy.
Okay, I’m a bit of a break about those things, but it makes a big difference. Assuming your reader won’t know the difference is a BIG MISTAKE. Some of us do, and it will result in a abysmal review and someone who will probably never read another thing you write.
Now that I have my rant out of the way, the point of today’s tip is that every occupation has its own jargon. Use enough in character dialog to sound authentic, but don’t boggle the reader’s mind with too many acronyms. That, of course, is going too far the other way. A few are okay, but even then the reader may appreciate it if you remind them from time to time what they stand for.