These are the different titles and roles of hotel workers.

Hotel positions

a person that owns or is responsible for controlling or administering a hotel.

a person who looks after guests when they first arrive at a hotel, checking them in, giving them their keys, and answering and forwarding calls.

a person whose job is to assist guests by booking tours, making theatre and restaurant reservations.

a person who is employed to clean or park cars.

a person in a hotel who performs services such as carrying guests' luggage.

a person employed to perform cleaning and other domestic tasks in a hotel or institution.

a person who ensures that the hotel is safe, tidy, and functional. They apply various skills to maintain their properties in good condition.

a person whose job is to bring the food to customers at their tables in a restaurant. 
Waiter (male)
Waitress (female)

a person responsible for greeting, welcoming, and seating customers as they enter a restaurant or dining area.
Host (male)
Hostess (female)

a professional cook, typically the chief cook in a restaurant or hotel.

a person employed to protect a building against intruders or damage.