I worked for a small manufacturing and construction group of companies for 15 years where I:
1) was a communications rigger,
2) 24hr on call technician for a major cellular company and a few other small organisations with RF installations,
3) managed an R&D team (for a while, not really my cup of tea),
4) was an R&D engineer, focussing on circuit design and PCB layout for surge protection, radio terminal units and other custom jobs,
5) wrote product documentation
6) handled customer support,
7) did day to day factory support,
had lots of interstate and overseas travel (Asia and Pacific mostly)
I'm currently working in Antarctica as a supervising telecommunications technician where I'm responsible for everything from the satellite WAN to photocopier maintenance.
I hope to alternate for a few more years working in design and travelling back down here as a technician.
I love the variety that a career in electronics can provide. Hardly ever a dull moment but, as Dave point's out in one of his blogs, you can spread yourself too thin. I am by no means an "expert" in any of these areas. However I don't want to be. I'll give two examples:
PCB design: I got by for years designing 2 and 4 layer PCBs with a basic (self taught) understanding of a few IPC standards, voltage clearances, track currents, controlled impedance, EMC, design for manufacturability, etc... When I finally had to do a high speed 6 layer board I had a go, but eventually contracted it out to someone who completed the job far quicker (and more cost effective) than I ever could.
Communications Rigging: I'm a technician with a basic rigger/dogger qualification. I can get most equipment up and down a tower safely, inspect equipment, debug and (in some cases) repair it 30m off the ground. I can not construct or re-tension guyed masts. For that I call in someone with an advanced rigging ticket.
These experts probably do get paid more than me but they do the same thing day in day out and that would drive me mad.
PS: 200km/h winds here today with sandblasting ice crystals. Try putting your head out the car window when (someone else is) driving at 100km/h then realise the increase in wind force is a power law (^3 I think).