Hendrickx began training at age five and a half. Since the age of 10, he is coached by Carine Herrygers. He began competing on the junior level internationally in 2007. He was out for four months in 2008 as a result of a groin injury. He debuted on the
ISU Junior Grand Prix series in autumn 2009. Hendrickx finished 9th at the
2012 European Championships. The next season, he received his first senior
Grand Prix assignment, the
2012 Trophee Eric Bompard in November. Hendrickx placed 4th in the short program, but had to withdraw the next day after sustaining an injury in an off-ice warmup for the morning practice. He fractured his ankle, tearing ligaments from his fibula. Returning to the ice in January 2013, Hendrickx began practicing some jumps toward the end of the month. He missed the
2013 European Championships but competed at the
2013 World Championships, finishing 19th and
qualifying a men's entry for Belgium at the
2014 Winter Olympics. He finished 16th. After
Turnhout's ice rink closed, Hendrickx decided to train at a temporary rink. He said, "It's extremely cold and the quality of the ice is not what it should be. The most important thing is that I didn't have to change environment, my school, coaches, medical team." He finished 4th at the
2017 European Championships in
Ostrava, Czech Republic. It was the best result by a Belgian skater since
2009. Hendricks won the
2017 Nebelhorn Trophy, and obtained a men's singles entry for Belgium at the
2018 Winter Olympics at
Pyeongchang,
South Korea. He participated in
the figure skating event at the Olympics with his sister
Loena, who also represented Belgium at the ladies' singles. After the Olympics, he skipped the 2018–19 figure skating season, and announced his retirement on 8 August 2019. == Coaching career ==