System administrators. IT pros. The IT guy (or gal). Techies. They go by a lot of names, but they all pretty much share a common goal: be the fantastic fixers of all things tech.
How about NethSerfs or Nethserviette (as in the French translation: servir or ‘to serve’ and not the British ‘table napkin’ translation).
Actually, I prefer the term ‘Open Source Network Infrastructure Consultants’ (OSNIC).
Or how about ‘Open Source Network Infrastructure and Information Communication Technologies Consultant’ (try fitting that title on your business cards)?