I don't think it's understood what OP is actually asking for. They want to be to start a new job (from lvl 1) and then get the full amount of experience to take it from lvl 1 to max level without starting half way there (like at 30 for HW and 50 for SB). It's not about being low level in a dungeon, but they just want to get the most out of the leveling experience.