He has represented his country at the Summer Olympics, World Championships and Commonwealth Games.

He is a silver medalist in the 100 metres in the 2018 Commonwealth Games Bruintjies took up athletics as a grade 1 schoolboy.

[1] In 2013, he was the South African under-23 champion in the 100 metres, defeating Akani Simbine in 10.44; at the national senior championships, he placed second behind Simon Magakwe in 10.58.

[2] Bruintjies also competed in the 2014 African Championships, taking part in both the individual 100 metres and the 4 × 100 metres relay; in the individual event, he was eliminated in the semi-finals, while the South African relay team was disqualified in the heats.

[5] Bruintjies competed in the 100 m event at the 2016 Summer Olympics in Rio de Janeiro.