Denda participated in the Nordic Junior World Ski Championships 2014 in the Italian Val di Fiemme , where he the Gundersen competitions finished in 39th place in one. He made his debut in the Nordic Combined Continental Cup around two years later, on January 9, 2016, in Høydalsmo , Norway . He achieved his first point placement in this competition series a week later in Kuusamo with place 26. At the Junior World Ski Championships 2016 in Râșnov he achieved places five and 16 in the individual competitions and was seventh in the team competition together with Hisaki Nagamine , Yuto Nakamura and Ryota Yamamoto . He also competed in 2017 and came in 30th and 43rd respectively in the individual. The first start in the Nordic Combined World Cup followed on February 11, 2017 in Sapporo, finishing 35th. On January 12, 2018, in Kuusamo, he achieved his first podium in the Continental Cup in second place and on February 3, 2018 in Hakuba, he also won his first World Cup point.