dvsDave calls me a Techie. I'm ok with that. I used to be a Junior Techie, but now I'm all growed up.
I don't work in professional theatre, I'm the volunteer lighting director at church. But people ask if I run sound, because they need to convey their suggestions/complaints/hints/gripes/questions/assistance/feedback mimic. Thus, you may refer to me as Techie, Technician, Techer, Stagehand, Gopher... - anything but Sound Op!