Someone who fights fires.
Firefighter
Someone who is a shop assistant.
Salesperson / Shop assistant
Someone who lends books out at a library.
Librarian
Someone who cleans houses, offices or other places.
Cleaners
Someone who plays music.
Musician
Someone who serves you food and drinks in a café, a restaurant or a pub. Say the masculine and feminine forms.
Waiter and waitress
Someone who makes bread and cakes.
Baker
Someone who writes books, articles, etc.
Author / Writer
Someone who combs, arranges and cuts your hair.
Hairdresser
Someone who fixes cars and other means of transport.
Mechanic
Someone who takes care of your pets or other animals.
Veterinarian (Vet)
Someone who takes photos.
Photographer
Someone who takes phone calls, messages and organizes the schedule in an office.
Secretary
Someone who work at a business.
Businessperson.
Someone who works at a hospital and takes care of your health.
Nurse
Someone who paints pictures and paintings.
Painter
Someone who takes care of your teeth.
Dentist
Someone who drives a means of transport (taxi, car, bus, etc)
Driver