What did James Stewart's character in "Rear Window" do for a living?

"Rear Window" is an American thriller film, released in 1954, considered one of Alfred Hitchcock’s most suspenseful movies. It starred Hitchcock favourites James Stewart and Grace Kelly. Stewart played L.B. Jeffries, a photographer who is confined to a wheelchair while recuperating from a broken leg. He spends his days obsessively spying out his back window into the apartments of the buildings behind him, getting to know his neighbours without ever meeting them. Gradually he becomes convinced that one neighbour (played by Raymond Burr) has murdered his wife.

Source: Encyclopedia Britannica