The former Wolves defender steps up from a development role after Domenico Teti left the position following the dismissal of Vitor Pereira.
Jackson told the club's website: “Yeah, it's a great challenge for me and a real honour to help the club. I've obviously been here for nearly five years now, and I've worked with some really good people. Scott (Sellars) first brought me in and then I worked for ‘Hobby’ (Matt Hobbs).
"After that, obviously, I worked closely with Domenico up until recent times, so I've seen all the departments of the football club. I had a brief spell going over to Grasshoppers, which was a brilliant responsibility for me, and a tough challenge, but one we came through pretty well at the time, but this is a whole new challenge again.”
He added, “I don't think there are too many who have played, had long careers on the pitch, and then done all of the roles off the pitch. Obviously, coaching tends to be a natural progression for players, but I've been the other way really, I've always been more stimulated by the business side of the game.
"I did my coaching badges, but didn't necessarily love it, didn't enjoy it, but I've really enjoyed the process part of the game. "