Here is the list of jobs you can get at The Ministry of Magic. Pick one of the jobs here and tell an admin what you picked. You must have finished at Hogwarts and have good enough grades. This is the list:
Department of Magical Law Enforcement
Auror Office
Magical Law Enforcement Patrol
Hit Wizards (and Witches)
Improper Use of Magic Office
Misuse of Muggle Artifacts Office
Office for the Detection and Confisctaion of Counterfeit Defensive Spells and Protective Objects
Wizengamot Administration Services
Ministry of Magic Witch Watchers
Department of Intoxicating Substances
Administration Registration Department
Department of Magical Equipment Control
Department of Magical Accidents and Catastrophes
Accidental Magical Reversal Squad
Obliviator Headquarters
Muggle-Worthy Excuse Committee
Invisibility Task Force
Muggle Liaison Office
Department for the Regulation and Control of Magical Creatures
Beast Division
Being Division
Spirit Division
Pest Sub-Division
Pest Advisory Board
Office of Misinformation
Goblin Liaison Office
Centaur Liaison Office
Commitee for the Disposal of Dangerous Creatures
Dragon Research and Restraint Bureau
Ghoul Task Force
Werewolf Capture Unit
Werewolf Registry
Werewolf Support Services
Office for House-Elf Relocation
Department of International Magical Cooporation
International Magical Trading Standards Body
Foreign Affairs and Sports Department
International Magical Office of Law
Internatonal Confederation of Wizards British Seats
Department of Magical Transportation
Floo Network Authority
Broom Regulatory Control
Portkey Office
Apparition Test Center
Floo Regulation Panel
Department of Magical Games and Sports
British and Irish Quidditch Headquarters
Official Gobstones Club
Ludicrous Patents Office
Foreign Affairs and Sports Department
Department of Mysteries
Department of Magical Education