Coach Todd Graham announced the moves on Sunday, one day after the Panthers finished the season with a 33-20 victory over Syracuse to improve to 6-6 and become bowl-eligible.
All three assistants have ties to former West Virginia and Michigan coach Rich Rodriguez, who became the head coach at Arizona last month. Magee and Gibson coached with Rodriguez at both schools while Dews worked under Rodriguez at Michigan.
Pittsburgh will face SMU in its second straight trip to the BBVA Compass Bowl to be played Jan. 7 game at Legion Field in Birmingham, Ala.
Information from The Associated Press was used in this report.