Robbie made his international debut against the USA in the summer of 2013 and has gone on to win 37 caps to date for Ireland.
He started every game of the 2015 Six Nations Championship and played in the opening two games of the 2018 Grand Slam success before injury curtailed his involvement. He returned to the Irish midfield to start all three of the summer tests against Australia.
Robbie won a Guinness PRO12 title with Connacht in 2016 and since his move to Leinster he has won a European Champions Cup and Guinness PRO14 title (both 2018) and has made over 30 appearances for Leinster.