As an example, I love the Martian, and I think a lot of older books from authors like Asimov are heavily into engineering / competence porn. Other favs in this category include the standalone novel Rendezvous with Rama to leave you wishing for more, most of the Culture series for happy utopian vibes, Schlock Mercenary for humor, Dahak series for fun mindless popcorn.
Edit: I’m so happy to have found a replacement for r/books and the rest of them.
The Vorkosigan Saga by Lois McMaster Bujold is like Horatio Hornblower in space. The main character has dwarfism and accidentally commandeers a mercenary fleet as a teenager.
One of my favorites!
Freaking Miles antics.