Babylon 5 was cheesy as hell, but eventually sprouted an interesting storyline.
I'm thinking of an android who was essentially 'stolen' by space pirates before activation, and used as labor on their ship for awhile...before going rogue, turning them in, and becoming a bounty hunter.
Still not 100% on careers, but probably some combination of Pilot, Space Jockey, Engineer and Bounty Hunter...though Miner keeps looking at me with that Darksight exploit and wagging its tail...