Career
Hayrapetyan debuted on the International Skating Union Junior Grand Prix series in 2009. In March 2010, he was sent to The Hague, Netherlands to compete at his first World Junior Championships but was eliminated after placing 34th in the short program He was also unsuccessful in 2011 and 2012.
Ranked 23rd in the short program, Hayrapetyan advanced to the free skate at the 2013 World Junior Championships in Milan, Italy, and finished 21st overall.
He also reached the final segment at the 2015 World Junior Championships in Tallinn, Estonia, where he finished 24th.