You guys need to stop thinking of jobs in terms of "levels" and "leveling". You're just confusing yourselves and others. Job is like a "mode" or "stance" that a class can go into for specialized party play. What abilities are available to you when you go into this mode depend on how many job quests you've completed. So you might think of jobs as "ranking up" instead like starting at Novice, then becoming Apprentice, Journeyman, ... Master depending on the quests you've finished.

All I hope for is that jobs are very fun in party play and that there is a clear sense of when using your job is better and when just relying on your class is better.