The 20-year old has been on the national radar since he burst onto the scene in 2016 when he became just the second Australian forward to sign a full Super Rugby contract while still at school.
The Brumbies star has enjoyed a bright start to the 2019 Super Rugby season after earning selection on the 2018 spring tour as a development player.
Rob Valetini said: “I am very pleased to have extended my contract at the Brumbies for a further two seasons.
“It was an easy decision for me in the end as I have loved every minute of my time here at the club. I feel like I am learning every day off a fantastic group of players and our coaching staff.
“The World Cup is definitely a goal for me and I would love to be part of that group in Japan after getting a small taste last year but right now I’m just trying to build some momentum and play some good footy for the Brumbies.”
Wallabies coach Michael Cheika said: “This guy is going to be a good player. He’s young, assertive in his game and he is a genuine footballer.
“He’s had a solid start to the Super Rugby season and he’s got a clear plan as to what he should build on to become a Wallaby – it’s going to be good viewing watching his journey, I am sure of that.”
Valetini will start at blindside flanker for the Brumbies in Friday’s clash with the Waratahs at GIO Stadium in Canberra.
Dan McKellar pre-match press conference vs Waratahs:
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