If you're into Lovecraftian bureaucracy spy thriller spoofs which gradually tilt more towards pre-apocalyptic urban dark fantasy trope-exploration, then Charles Stross' The Laundry Files series (
Wikipedia, which links to a bunch of free-to-read-online novellas to try) might be the thing for you.
Protagonist Bob Howard starts off as a relatively low-level office IT guy with a few tech-assisted magical skills, who gradually keeps levelling up with knowledge and abilities as he tries to help stave off the effects of The Stars Becoming Right, to the point where the author now considers him unsuitable to be the 1st-person protagonist of the next couple of stories because he's gotten too powerful in relation to his supporting-cast colleagues (who'll be taking over the POV narration duties), at least until all hell finally breaks loose in a few more novels and he'll be up directly against The Things From The Dungeon Dimensions which outclass him again.
This series is one of my personal favourites and IMHO, it's really good, and funny in places (but with a decided tendency to go very dark with the Mood Whiplash, so YMMV), and two of the novellas have been nominated for/won Hugo Awards.