Not all jobs are promotion driven, at all. My current dev job is for a small family biotech business, and the only path upwards from where I currently am would involve church bells and a flower girl.
But there are still things you need to avoid that would get you fired if your performance dropped and there are still things you can do that would improve or decrease your job prospects on the open market if the company ever goes under or is forced to let you go. I'm using "promotion" in a more abstract sense than literal promotions.
