My job is basically hiring different “audio engineers” for a major media company. As an “audio engineer” myself, I can tell you that the phrase means nothing to non-audio people. It’s basically used to describe a recordist (records), mixer (moves and affects recorded pieces into a whole piece) , masterer (makes the whole piece fit in with other whole pieces of its kind by slightly compressing or expanding the audio), editor (chops and moves raw audio similar to a mixer but usually deals specifically with raw audio) or sound designer (works with sfx, ambient sounds and music to create audio scenery).
Those are all generalizations and the formatting is terrible. Forgive me.
Latest Answers