Officers cover deck, engineering and communication. Positions are:

Mater Captain , ultimate authority on board.

Staff Captain , duties include dealing with staff, crew as well as ship navigation

Other Officers, ship navigation

The Chief Engineer , mechanical authority
Engineers, responsible to the Chief engineer, responsible for all engine and installation aspects
Chief Electrician and Electricians , responsible for electric installations on the ship
Chief Radio Officer and his assistant(s) , in charge for radio room and for all communications with the outside world

Doctor and Nurses - no need to explain

Crew group responsible to Officers:
Deckhand
Bosun
Seaman
Quartermaster
Painter
Carpenter
Those positions are responsible for general maintenance, docking, operating drills etc..

Staff positions:

Cruise Director ; Ultimate authority for leisure, entertainment and recreation on board. Administrative responsibilities as Head of the Cruise Staff & Entertainment Departments. Requires: Ability to communicate with all level of personnel and passengers / creative to keep shows and activities in running order.

Assistant Cruise Director; assists the Cruise Director in his job
Cruise Staff; Provide s fun for the guests during the cruise such as bingo and pool games.
Chief Housekeeper and Housekeepers; responsible for all aspects of passengers' staterooms
Cabin Steward; Housekeeping passengers rooms
and providing room service
Activities Coordinator; Organizes and leads passengers in recreational activities - Ping-Pong, volleyball tournaments, shuffle board, and golf games, etc.
Fitness Instructor : Lead s passengers in daily fitness activities ,including morning stretching and walks, body toning, aerobics and step aerobics classes as well as afternoon jogs.

Diving Instructor; Leads passengers on diving excursions at ports-of-call and provides introductory diving instruction in the cruise ship pool. Requirements: Certified NAUI, SSI or PADI Diving Instructor with experience. CPR and First Aid certification preferred.

DJ: Works only at night, when the disco is open. Requirements: Has to be communicative and outgoing person who can initiate the atmosphere. Experience is required.

Water Sports Instructor: Lead and coordinate scuba diving, snorkeling, jet skiing, windsurfing and other similar activities. This position requires very experienced instructor who holds recognized certificates.

Childcare Positions: In charge for all aspects of children's programs and facilities.

Entertainers; Various positions - like Musicians, Dancers, Actors, Animators and many other stage performers depend from one ship to another. To apply for any of these positions you'll most likely need to prepare some video portfolio with your performance.

Technical Staff; In charge for stage sound, light and other technical issues

Computer Staff; In charge for computer systems and Internet bars on board

Photographer; Takes photos of passengers during embarkation , tours, various events, dinners and during tours. Develops and sells photos to passengers: commissions depend on sale.

TV Station Manager; Coordinates onboard video and satellite programming.

Casino staff; Casino Manager, Dealers, Slot Technicians, Cashiers, etc. running gambling activities on the ship.

Shop staff; Shop Manager and Assistants run gift shops, boutiques and perfumeries on the ship.

Spa and Salon staff; Hairdressers, Salon Managers, Nail Technicians, Beauty and Massage Therapists

Purser's office:

Chief Purser; in charge for operations like embarkation, handling passengers' complaints and requests, supervising front desk, auditing all revenue from concessions, supervision of cashless system, coordination with the company headquarters
Hotel Purser; responsible for passengers' relations and comfort, taking care of financial transactions, providing information about ports and tourist attractions, information about ship, handling passengers' requests and complaints
Crew Purser; running administration of crew office, being in charge for contracts, personnel files, passports, visas, etc.
Security Officer ; taking care of security issues on the ship

Restaurant :

Restaurant Manager;
in charge for restaurant operations, responsible to the Hotel Manager
Maitre 'd (Head Waiter); organize passengers sitting arrangements in the dinning room, matching them according to their compatibility.
Waiter and Busboy; serving meals
Wine Steward ,Bar Staff; Bar Manager, Assistant, Bartenders of course running bars operations onboard

Galley staff:

Executive Chef; in charge for the food quality, plans menus, organizes all food preparation issues, responsible to the Hotel Manger
Other galley staff; Head Chef, Sous Chef, Pastry Chef, Chef de Partie, Buffet Chef, Commis Chef, Vegetable Chef, Butcher, Baker, Confectioners, Kitchen Assistants, Dishwashers

Catering Staff:

Food Manager, Assistant Food Manager, Buffet Manager

Cleaners, Dry Cleaning, Laundry Staff;
positions with the lowest salary