Ngyuen won three consecutive national titles, being the youngest athlete so far in each category: He won the Juvenile title in 2007 at age 8, the Pre-Novice title in 2008 and the Novice title in 2009. He became also the youngest Junior Men's Champion when taking the title in 2011 at age 12 and youngest National Champion (senior level) in 2015, at age 16. Ngyuen's younger sister Kim is also a figure skater.