[3] He made his debut for the Belgium Under 21 side, in 2012 at a qualifying for the Junior World Cup.

[5][6] Hendrickx made his senior international debut for Belgium in 2012, at the Champions Trophy.

At the tournament, he finished as top scorer alongside Blake Govers of Australia with 7 goals.

In the final group game against Great Britain he suffered a bad injury when he got a stick to the face.

[14] In 2024 Kalinga Lancers acquired him in auction to play in 2024-25 Hockey India League[15]