Sam first played schoolboy rugby for Australia 'A' after winning the Associated Independent Colleges competition with St Edmund's College in 2011.
He played Rugby League for the Gold Coast Titans U20s after school, before returning to Rugby Union at the end of 2013, when he joined the Reds wider training squad and returned to his former club GPS.
Sam impressed the Reds coaching staff in 2014 as a regular in the midfield for Reds 'A' and GPS, which led to him making his Queensland Reds debut off the bench against the Western Force in Perth. He then went on to play five matches for Queensland Country in Australia's National Rugby Championship.
To date he has made two Super Rugby appearances for the Reds and has been named on the bench a further three times.
Speaking to glasgowwarriors.org, Sam said: "I'm excited about working with the coaches at Glasgow and I've heard a lot of good things about the club and the city.
"I've spoken to a few boys at the Reds about Matt Taylor, who used to be the defence coach here and they've told me how good a coach he is, so it'll be good to work with him.
"Glasgow play free flowing rugby and I really like the way they attack, which is a bit different to typical European teams and defensively their structure is second to none.
"I've been watching the European Rugby Champions Cup this season and I'm looking forward to having the opportunity to test myself at that level against some of the best teams in the world.
"Hopefully I can make a contribution at the Warriors and learn as much as I can over the next couple of years.”