@mms Sure, I was invited to CoSysOp BBSes run by admins at nps.navy.mil when I was a teenager (unpaid) & was a SysOp of my own BBSes was well in the early 1990s.
Since the late 1990s was Lead Network Technician for a company with tens of millions of phone #s assigned to it (Aeris . net), have administered networks for companies with > 1500 employees, commercial websites with > 60,000 paying subscribers and hundreds of domains, helped patch a critical bug in software used billions of times an hour by more or less everyone online (BIND) & have been employed by companies which had Fortune 1 (cross browser development framework offered by Sauce Labs, built atop Selenium), was previously IT Admin for a company that had Microsoft, Facebook/Meta, Google, Bank of America etc. (I was previously IT Admin for iSEC Partners which did pentesting, code auditing for the aforementioned & many more) as clients but I would rather run @grunfink's snac (https://codeberg.org/grunfink/snac2) than Mastodon personally.