The deal will see him pursue his rugby career in the country of his birth, and for whom is father Gregor won a single cap at prop against Australia (1984) alongside Scotland greats Colin Deans and Iain Milne.
Ruaridh and his family left Inverness for New Zealand when he was three months old, where he would attend Christchurch Boys High School, famous for producing the likes of Dan Carter, Brodie Retallick, Sir Graham Henry and Steve Hansen.
He was named vice-captain of the Christchurch Boys 1st XV before joining Bond University in Queensland on a Rugby scholarship before being selected in the Queensland Reds U20s programme aged 18.