A product of the FOSROC Scottish Rugby Academy, the flanker made his professional debut for Edinburgh against Leinster in November 2020.
Prior to penning his first professional contract, Darge had represented Southern Knights in the inaugural FOSROC Super6 campaign, as well as turning out for Melrose in the Tennents Premiership.
Having come through the ranks at North Berwick RFC, he made his Scotland U20 debut at the age of just 17, going on to earn 13 caps for the age-grade side in addition to captaining the team in the 2020 U20 Six Nations.