Re: You may need to narrow your target
I had exactly this at DirectGov, back in the day when it was rapidly expanding.
They wanted someone to just install some 60 computers over the course of a couple of months - three month contract, that was it.
When they realised I was well versed in networking, virtualisation, hardware, troubleshooting, windows imaging (which incliuded testing of images - and the test dept was technically where I worked) and pretty much everything IT related bar programming (I can parse programming languages in my head, but don't have the mental spacial awareness to write from scratch) they made a space in the organisation for me, which was as the guy who ran the 'offline' test network (IE an ADSL connnection rather than the secure government network, GSI) and the guy who consulted on pretty much everything else and could ask and answer a lot of difficult questions that the local specialists (some very good artists, programmers, web devs, content editors, etc) were perhaps less used to thinking about. Standalone Network Adminstrator was the title, but really I was a multidisciplinary consultant - who they'd talk to before going to vendors, etc.
That went really well till I had a nervous breakdown, but that was less about the job, and more about me.
At the moment I work as a a Specialist Engineer at a local computer services outfit - my namebadge literally reads : "IT Ninja: I know everything" as it's a bit of a truism that if something even slightly outside of the normal Windows/Networking/Server stuff comes up (Unix, complex networking (VPN trunks, heavy VLANing, someone wanting to have a portable network on sites, etc) then it almost always gets passed to me.
It's a nice job, with good people, but not great pay.
So I'm in the same position as OP to an extent. I'm happy enough for now (they really are great people) but I can't stay on sub £20k forever....
Name withheld because My People read here. If you recognise me, lets keep this to ourselves, eh? And besides, you know all this already and know to keep me sweet as best you can ;-)