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.
Wow you read a lot more into the religious theme than I did. I found it an exploration of the engineering behind almost every SciFi trope rather than playing god.
And as an atheist I found the religious characterisation entirely adequate, it is a minor part of the characters personality, and it’s only in the obnoxious ones that it becomes dominating. Which is quite close to how it is in my daily life.
But yes, the whole series is made within and to serve nerd culture, it is a long long stream of references and in-jokes at multiple levels, including the main premise. It just happens to also be intelligently written.
I wouldn’t say that there’s a major religious theme. It’s just that Bob doesn’t interact with that many characters except himself, so those interactions felt more important to the plot. Then again, I wouldn’t say that the Brazilian navy AI was a very multifaceted character either.