What does a lighting engineer do?

What is the occupation of a lighting engineer? The explanation is as follows:

A lighting engineer uses various professional lamps to create various "light and shadow effects" according to the needs of different artistic styles.

On film and television, a picture has bright and dark parts besides dark parts. Clever composition with light and shade is a very important means of expression in image art creation. The work of lighting engineer goes hand in hand with the work of photographer, especially indoors: the lighting task of news, special topics, audio-visual education, literary evenings, sports competitions and other programs is even more arduous.