I only do web development, but my networking knowledge mostly comes from being the designated person to call the ISP for tech support and being in charge of setting up the WiFi in every place that I've lived, in addition to participating and running community scale mesh wifi tech meetups for many years (think NYCMesh except just 4 guys who never accomplished much aside from buying and flashing lots of routers with openwrt lmao)

I also ran 12Us of homelab for a few years in my basement, which was powered by an overkill fiber to the home setup (courtesy of tricking Comcast into undercharging me for gigabit pro) that necessitated a 10G switch and firewall.