WELL, for my novel, the characters are in high school for the duration of the story, but Kody and Sam both have part-time jobs as cashiers at their local grocery store. Sam's training to be a vampire hunter as well--it's kind of a family business--so he probably continues down that path, despite being friends with some of the monsters ahaha. After finishing school, Kody probably goes on to do like, construction work for awhile to earn some money, and eventually winds up as a detective or something to that effect. Kat thinks she's going to be a doctor like her parents, but probably also winds up doing something with law enforcement, maybe forensics. Mitch eventually has some success as a musician, and later a writer. I'm sure Marten winds up doing something sciency, maybe a biologist? I don't entirely know what Raina will wind up doing but I could see her like, owning a flower shop or something. Deryk is a DJ, though he eventually takes more of a musician route as well. Krysten is absolutely going to be like, a politician, or at least work in government hahaha.
I recently started updating this thing again, for any interested parties: