Captian: leader of the crew(obviously), and has the responsibility of getting them between planet and planet without crashing the ship, along with having to converse with locals to get them to be his allies.
First Mate: keeps the crew in line, and also takes place of Captain in his absence.
Chef: Cooks things (duh.) and does the farming (Glitches are amazing at farming.)
Hunter: Goes and kills monsters to get Leather and Alien Meat
Doctor: Heals others, and makes stimpacks.
Scientist: Does most of the research on things, and makes new tech.
Mechanic: Deals with anything involving ship repairs, or the internal systems of it.
Loremaster: Keeps record of their journeys, info on all the crewmates, places they go, and any information he finds about ANYTHING
Bartender: Makes drinks and guns for the crew
Architect: Builds the home for the crew for when they're down on the planet.