The Free On-line Dictionary of Computing (30 December 2018):

actor/singer/waiter/webmaster

    An elaboration of the ages-old concept of the
   actor/singer/waiter, someone who waits tables __for now__, but
   who has aspirations of breaking into the glamorous worlds of
   acting or New Media or both!

   He keeps going to auditions and sending a resumes to C|Net
   (http://cnet.com/) because you have to pay your dues.

   His credits include being on "Friends" (as an extra), in "ER"
   (actually, in an ER - he twisted his ankle once; but he counts
   the x-rays as screen credits), and having been the webmaster
   of an extensive multimedia interactive website (his hotlist of
   "Simpsons" links).

   (1998-04-04)