Ejbog started in Dresden in February 2015 in the Short Track World Cup for the first time and finished 43rd over 1500 m and 30th place over 500 m. At the Junior World Championships 2015 in Osaka and at the Junior World Championships 2016 in Sofia , he won the bronze medal with the relay. At the Winter Universiade 2019 in Krasnoyarsk , he won the silver medal with the relay. In the 2019/20 season he won in Salt Lake City with the relay and mixed relay and in Shanghai with the relay. He was also third in Nagoya with the relay and second with the mixed relay and in Dresden second with the relay. At the 2020 European Championships in Debrecen , he won the gold medal with the relay.