Successfully complete the indicated task to unlock the corresponding job:

Black Mage: Reach 10F in Guardian Of The Flame.
Dancer: Enter "Pirouette[Music Note]" as a case-sensitive Romantic Phrase.
Dark Knight: Defeat Croma Shade in 30F in Guardian Of The Light.
Dragoon: Successfully complete Meja's Memories.
Knight: Successfully complete Freja's Memories.
Ninja: Successfully complete Volg's Memories.
Scholar: Defeat the four elements in 20F in Guardian Of The Water.
Thief: Steal the item behind Merchant Hero X in one of his dungeon shops.
White Mage: Successfully complete Pastor Roche's Memories.