Ok here are the jobs you can get. (Only Chunin+)

Police:
Detective (needs a 2nd class degree as either Dowser or Magus)
Police Seeker (seeks out criminals, needs a 1st class degree as Dowser)
Military Police (needs to have passed academy)
Military Police officer (needs to have had a 3rd class degree as any of the degrees and experience as any of the above)

Military
Shinobi: (no requirements)
Scout: (needs degree as forest ranger and/or a 3rd class degree as dowser)
Medic: needs a basic medical degree adn combat training
Surgeon: needs to be chuunin+ and has experience as Medic
Shinobi officer: needs training as shinobi
Ranger (needs to have been a scout)
Archer: (no degree needed)
Sniper: (needs experience as Archer)

Church/exorcism
Minister: (no requirements, just a bible and some training from a Magister)
Magister: (experience as Minister)
Exorcist Monk: (3rd degree Exorcism)
Exorcist Bishop: (2nd degree Exorcism)

MysTech
Researcher: (no requirements, merely some scientific knowledge)
Demon Researcher (needs a 3rd class degree in Demon Arts)
Demon Hunter: (needs a 2nd class degree in Demon Arts and a 3rd calss degree in exorcism or shamanism)
MysTech special forces (needs previous Military experience)

Government Employees
Clerk: (no requirements, just basic literacy)
Misc. Lower Employee (experience as Clerk)
Misc. Higher Employee (experience as Misc. Lower Employee)

Mercenary-Misc
Sellsword: (basic combat training)
Bodyguard: (basic combat training)
Rogue Magus: (any degree as Magus)
Bounty Hunter: (experience as Sellsword)
Thief, lower rank: (NOT A JOB, JUST ROB FOR GOD'S SAKE)
Hired Tracker: (any degree as Dowser)
Summoner: (any degree as Shaman)