A occupation that starts with the letter Z?

Ambulance attendant, bail bondsman, camp counselor, database developer, environmental engineer, fish farmer, gate guard, head housekeeper, Immigration inspector, juvenile court judge, kennel keeper, law librarian, meter maid, nanny, operating room orderly, parachute packer, quilter, rodeo rider, school superintendent, ticket taker, umpire, vending machine filler, window washer, xylophone maker, yak herder and zookeeper are jobs.