A profession are the characters skills he has acquired in life mainly on board a ship.. There are 5 different professions needed on a starship, it is best you and your friends sit down and decide which characters are going to fill each roll. If a vital role is not filled an android can be used which is controlled by the GM or one of the players. The 5 professions are combat officer, science officer, pilot, engineer, and medical officer. Each profession has their own set of skills and feats.