He’s the same Draco you all know and love, returning back to Hogwarts to teach Advanced Potions. It’s what he was the best at during his school years, and Minerva personally asked for him back to teach. After the war, it was difficult for a Death Eater like him to get a job. Many places rejected him, especially after knowing of his Azkaban trial. So far, he’s been teaching a total of four years. Not only is he a professor, but he was elected head of the Slytherin house.