Dell made 12 appearances for Franco Smith's squad after arriving at Scotstoun in the summer of 2022.
He previously played for Edinburgh and London Irish.
Capped 34 times by Scotland since his debut against Australia in 2016, he also received a call-up to the British and Irish Lions tour of New Zealand in 2017.
Dell's new role at Bridgehaugh is to help design and manage a pathway for aspiring players and Coaches.