Does it mean you can essentially get fucked if you level too much of the wrong jobs? Can you reset them somehow?
And the grind I'm talking about is more related to the character level instead. JRPGs in general tend to be a battle of numbers, so leveling up, and increasing your HP, attack, defence, etc as a consequence tends to be the main way to get stronger. Job level, on the other hand, are more of a "sidegrade", since it offers more tools to beat the game (mostly skills or passives), instead of just raising your numbers.