1) To make a career out of a temporary job. see Lifer
2)(Mil.) To voluntarily extend one's Tour of Duty into long-term employment
1) "I didn't think I'd like sitting at a desk all day in front of a computer, but after this, I might just go career."
2) The Sergeant decided to apply to OCS and possibly go career.
"No shit man. She said 'yes'...we're going career! I'm gonna be a married fucking man!!!"