Vaguely described, "IT Specialist".
In my case it means that to varying degrees I'm a sysadmin, database admin, backup responsible, software developer and support technician. It's a varied job obviously, but sometimes you get stretched just a little too thin.
I've been getting started on GTD for about a year, and the recent two months have been pretty good - to the level where I actually feel that I'm "doing GTD". Hopefully the higher altitudes of planning will help out with trying to focus ahead a little more on my different areas of responsibility.