Every Job position is an ultimate job position. Employee will bust out the most creativity and energy when they like it, when they feel happy with it.
If a job position is designed as a stepping stone for a better position, then it is a bad job.
If a job position is simply menually repeating work, it is a bad job.
If a job is always driven by others, it is a bad job.
As I thought always, leader's power not comes from the position but from the inflencer.