What my Harry Potter students are doing after Hogwarts?
This includes Pamina Siemens, Ben Chaplin, Vortula Portocalos, Deidre Mikealson and Leslie Woodstock
Pamina went into the ministry and works for the Department for the Regulation and Control of Magical Creatures at least for a brief time before she went completely into Magical Creature study.
Ben Chaplin was briefly put in a care facility after the war due to the extended Imperius Curse he suffered from. Once he was seen fit to go back into society, he becomes a teacher at Hogwarts for Potions.
Vortula Portocalos didn't get an offiicial job due to herself being a werewolf, but she did end up writing a lot of books about werewolves and their behaviour. She did write them under a fake name so people wouldn't know she was actually a werewolf herself.
Deidre Mikealson also went to the ministry but it is unclear which Department she went into. There has been a little of a rumor that she became an Unspeakable but these are just rumors.
Lesie Woodstock originally wanted to be an auror but she was never good at school or not good enough. So she went for the Improper Use of Magic Office. She did want to work in the Law Enforcement Departure.