A dynamic and powerful No.2 with good size, Folau Fainga’a has long been in Michael Cheika's calculations. Faingaa trained with NSW in 2013, when Cheika took over the reins, though rugby was just one part of a full life at that point. A spot in the Australia U20s in 2015 ignited his professional hopes and he trained with the Waratahs' main squad for eight weeks. A breakout NRC season in 2017 earned Faingaa a shock callup to the Wallabies squad for the third Bledisloe Test. At that time Faingaa was only on an extended squad contract with the Brumbies and was yet to play a Super Rugby match, having been a full-time concreter just months earlier. Faingaa debuted off the bench against the Rebels in 2017 and went from strength to strength, earning inclusion in the 2017 June Series squad.
Represented Australia U20s at the World Rugby U20s Championship in Italy.
Was included in the Wallabies squad for the third Bledisloe Test in Brisbane.