Beginner Jobs - These are the jobs you start with.
Warrior
Priest
Magician
Unique - Each character has a special class that cannot be changed.

Intermediate Jobs - These require level 6 in a beginner job.
Samurai - Unlocks at Warrior level 6
Archer - Unlocks at Warrior level 6

Monk - Unlocks at Priest level 6
Shintoist - Unlocks at Priest level 6

Spiritualist - Unlocks at Magician level 6
Incantor - Unlocks at Magician level 6

Advanced Jobs - These require level 8 in one or more intermediate jobs.
Herculean - Unlocks at Samurai level 8
Hunter - Unlocks at Archer level 8
Daredevil - Unlocks when Samurai & Archer are level 8

Shinobi - Unlocks at Monk level 8
Ritualist - Unlocks at Shintoist level 8 for male characters
Maiden - Unlocks at Shintoist level 8 for female characters
Barrierest - Unlocks when Monk & Shintoist are level 8

Celestial - Unlocks at Spiritualist level 8
Confucian - Unlocks at Incantor level 8
Elemental - Unlocks when Spiritualist & Incantor are level 8

Specialized Jobs - These require level 8 in at least 2 advanced jobs.
Champion - Unlocks when Daredevil & Celestial are level 8 for male characters
Warrioress - Unlocks when Daredevil & Maiden are level 8 for female characters
Chanter - Unlocks when Barrierest & Confucian are level 8
Tengu - Unlocks when Monk, Hunter, & Elemental are level 8


For more detail and in-depth information, check out the main God Wars site:
https://godwarsgame.com/system/job.html