What he wants to hear
First and foremost your date wants to hear that you speak about your job in a positive tone. You spend most of your time at your job, and if it brings you down, then that means should you and your date get serious, he’s going to hear a lot of complaining out of you—and he doesn’t want that. He also wants to hear you mention a future job/position/achievement you’re looking towards, so he can know you don’t just look at your job as a way to pay the bills, but rather a passion. A person without passion becomes dull fast.