Bill had always been a bit timid in spite of his intelligence and Aaron used to protect him, if he ever faced bullies. Bill was always aware of how Aaron saved his dad's job.
Due to all these reasons, Bill's admiration for Aaron only grew. He personally witnessed the change in Aaron's personality when he left London and when he was back.
They both graduated with flying colours and Bill was free to take a job wherever he wanted as he was one of the toppers of their batch but Bill chose to work with in the Devies' family business as he too intends to come back to London.
Aaron was surprised when Bill expressed his wish to work in their industries. So, without any interview, Aaron gave him one of the highest positions in his company. It was of his assistant. Aaron knew of his intelligence and no interview was needed to hire him. Rather, Aaron was more than happy to have Bill next to him.
