Simplify the following text for a Grade 8 native English-speaking person.
Original: Born in New York City , New York , he worked for The Walt Disney Company as a character designer and story artist beginning in 1933 on the Mickey Mouse short , `` Mickey 's Gala Premiere '' .
Simplified: In 1933 , he was hired by Disney for the Mickey Mouse short movie `` Mickey 's Gala Premiere '' .