I have never liked that these titles don't name audio or video. An Electronic Systems Integrator could be a guy who does street lighting, traffic signals, irrigation systems and canal locks control.
Or a gal. I'm open-minded.
And so could Technologist. Seems like no matter what it is, we have to explain it.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw