Acting manager Eric Black has confirmed that Jimmy Sinclair has joined as a coach.
Black moved up to No.1 after the departure of Rémi Garde.
The 52-year-old has elected to bring in another coach to help work with the first team ahead of the final six games of the current season.
Sinclair spent a number of years as the head of the Rangers youth academy, overseeing the development of many top talents, as well as a role as technical director of the Scottish Football Association.
Black said of the appointment: "I'm delighted to confirm I'll be assisted by Jimmy Sinclair during my tenure as acting manager.
"You'll see him in the dugout for the first time this weekend.
"He's someone I trust implicitly and he is a hugely respected figure within Scottish football, having worked at the Scottish Football Association and Rangers.
"Jimmy is a great coach and has a fantastic knowledge of the game.
"I feel really fortunate I've been able to call upon his services at such short notice."