I’m trying to get a job in IT that will (hopefully) pay more than a usual 9 to 5. I’m been daily driving Linux exclusively for about 2 1/2 years now and I’m trying to improve my skills to the point that I could be considered a so-called “power user.” My question is this: will this increase my hiring chances significantly or marginally?
Yes, because you’re already familiar with the command line. But for a job in the professional Linux world, also try out RHEL (not Fedora), and familiarize yourself with best practices in patch management. There’s a lot more to it than just dnf upgrade if you have applications depending on specific versions of packages, CVEs need to be mitigated ASAP, downtime needs to be minimized and reverting a borked upgrade (including the installed database) needs to work 100%.
Also, get familiar with containerization, SELinux, VMWare hypervisors, a version control system, the LAMP stack and Samba.
Good advice here, although I would recommend going for debian instead, get a grasp how different package managers in linux do the same thing.