My official job description, which was agreed upon by my boss and me, reads something like this: "System administrator and software developer for the production IT at the automotive supply company Magna Powertrain in the production plant Ilz".

It doesn't really list individual skills or specific jobs, except the department internal distinction between the Office team, the SAP team, the production IT team (my part) and the networking team.

To put it simply, if it's a computer that runs in some kind of machine that produces automotive parts (or parts for that parts), it is the responsibility of me and my three coworkers. Plus i have to maintain and develop server software (and the servers) for the central managment of those machines and the data they produce. My job description implies that i a) either already have the required skills to fix it, b) quickly be able to learn the required skills or c) find a company that can do a specific job.

So, it's more a MacGyver like job than having a highly focused skill set. Working with cool stuff (production lines, industrial robots,...) and sysadmining generally is, btw...

In effect, if you want a job like mine, don't focus too much in specific topics. Learn to learn fast and try to think on your feet. It's stressful at times, but it's seldom boring. Got new challenges everyday, which makes it quite a fun...