Although if you looking for a job, say in an actual company, unless you have some c++ skils or modeling skills, you really dont have much of a chance at much more than a qa guy or an intern.
I dunno man, I've seen some pretty shitty code when I worked as a game programmer. Probably some of the most untidy sloppy code I've EVER seen

(and that was just mine)...
Seriously though. I agree on the C++ aspect, however, a half decent demo that is visually appeasing will definitely get your foot in the door. The 3d code you write in 3dgs isn't really much different than doing it in your own engine, just different function calls.