Hmmm sounds like the "we can't give you a raise, but we 'can' make you Senior Vice President..."
Not really. If you only have one person per job, they are all going to be in charge of their job. There is only one person looking after the office, so they are the Office Manager. There's only one person handling business development, so they are the Head of Business Development. I guess you could just call Kul "Business Developer", but I imagine the big titles are handed out in order to make it easier if more staff are hired that need to report to an existing member of staff... and because people like to have a big title, of course.