Job Role Timeline

Scriptwriter - A scriptwriter is a person who would write the film. A scriptwriter would have to work before pre-production began, know as the development stage, because the script needs to be written before production on the film can begin.

advantage - Your in charge of your own job. 

disadvantage - You are given a deadline, which only gives you a limited amount of time, and as soon   as development has finished you are no longer working.

Director - A director is a person which is in charge of the creative aspect of the film. He/She would need to be in pre-production because they need to know who's in the film and work with the main actors during the rehearsal stage. The director would also have to work with the producer during this stage.

advantage - Your in charge of the creative side of things, and it's overall your film.

disadvantage - Because your in charge you will work long hours covering different sectors of work.

Producer - A producer is a person who is in charge of the finacial part of the film, the producer also supervises the film during it's entire production. It's important for a producer to be involved with the pre-production stage of the film because it's the planning of the film were they would have to hire people, create deadlines, and approximate the entire cost of the films budget.

Advantage - You work throughout the whole production, your job is secure.

Disadvantage - Your job takes a lot of reasonability, and if something goes wrong it's your resposabilty.

Sound Recordist - A sound recordist is a person who would make sure the sound is right for the film during production, but it is also important for them to work during pre-production of the film because they need to work with the location manger during recce's to see if the sound of the set location for the film. The sound recordist job ends after production has concluded. This also apply's to the make up artist because they need to discuss with the director and costume designer. 

advantage - You get to work with the director and location manger, and this could create a good network for your future career. 

disadvantage - A disadvantage of this job is that after production your job role ends, so in post-production your work is no longer needed.

Editor - A editor is a person who would edit the film after filming for it's theatrical release. The editor would closely work with the director because, the final edit will be what the audience will see during the film's theatrical run. The director would vote to keep or lose a scene. The producer would also work closely with the editor because they would need to supervise the edit and see how the overall project.
Advantages - You get to work closely with the director, You gain a reputation and more likely to be employed again.
Disadvantages - A disadvantage of an editor would be that the work can be frustrating. And you have taken on a lot of responsibility. 

Make-Up Artist - A make-up artist is person that would create and apply the make up for the actors. The make up artist would work in the pre-production and production stage. They would work with the actors and the director. They would work with the director because the director would need to approve, because they are in charge of the visual side of the film.
Advantage - In your job, you get to use your creative side.
Disadvantage - What the director says, goes. 

Costume Designer - A costume designer is a person who would create the designs for clothing that the actors would wear during for the film. The person in this job role would work with the director and producer during the pre-production stage. The director would the overlook of the design and the producer would have final say.
Advantage - You play a big role in the visually creative aspects of the film.
Disadvantage - Your time will be limited, and you need the directors and producers approval.