Production Sound Mixer
Record dialogue and sound effects while scenes are being filmed.
A Dialogue Editor collates, edits, and synchronizes recorded dialogue for a film or television show. As Dialogue Editor, you are a specialized worker and fall into the broader category of Sound Editors.
In this position, Dialogue Editors take the audio tracks recorded on set, and clean them up with their audio equipment. This means you balance and equalize the sounds to make each word as clear and crisp as desired.
If the on-set recording was poorly done, however, the dialogue can be obscured by background noises to a degree that makes the tracks unusable. When this happens you re-record the tracks by bringing the Actors to the studio and having them speak their lines while watching their performance. While this is extra work, you do get to rub shoulders with the big stars when it happens.
On bigger film projects the position of re-recording these tracks is a separate job referred to as an ADR Mixer, or Automated Dialogue Recording Mixer (a title drawn from the equipment you use). However in most film projects the two positions are viewed as one and the same.