Pakhnyuk began gymnastics at the age of 10.
2008–2013: Ukraine Pakhnyuk competed at the
2008 Junior European Championships and placed fifth in the pommel horse final. His first major senior international competition was the
2012 European Championships, and he helped Ukraine place fifth. He then represented
Ukraine at the 2013 Summer Universiade and helped the team win the silver medal to Russia.
2014–2016: Azerbaijan In March 2014, Pakhnyuk left the Ukrainian team and began competing for Azerbaijan. He was recruited to join Azerbaijan as they were building a gymnastics program for the upcoming
2015 European Games in
Baku. His first major competition for Azerbaijan was the
2014 World Championships, where he finished 15th in the all-around final. At the
2015 European Championships, Pakhnyuk finished ninth in the all-around final and sixth in the parallel bars final. He then represented
Azerbaijan at the 2015 European Games alongside
Eldar Safarov and
Oleg Stepko, and they won the bronze medal in the
team competition. Pakhnyuk finished 20th in the all-around at the
2016 Olympic Test Event and earned a berth to the
2016 Summer Olympics. There, he finished 34th in the all-around
qualifications and did not advance into any of the finals.
2017–2022: Back to Ukraine Pakhnyuk decided to rejoin the Ukrainian team in 2017. His first competition back with Ukraine was the
2017 Summer Universiade, and he helped Ukraine win the team silver medal. He also won a silver medal on the parallel bars to Japan's
Shogo Nonomura. At the
2017 Varna World Challenge Cup, he won the parallel bars title and also won a silver medal on the floor exercise. Then at the Paris World Challenge Cup, he won silver medals on the floor exercise and parallel bars. Pakhnyuk won the all-around bronze medal at the
2018 American Cup. He then injured his leg while competing at the Stuttgart World Cup. He returned to competition at the
2018 European Championships, but he could not compete on all six apparatuses. He won the gold medal on the parallel bars at the
2018 Szombathely World Challenge Cup. At the
2019 American Cup, Pakhnyuk placed fourth in the all-around. He then won the all-around bronze medal at the
Stuttgart World Cup. At the 2019 European Championships, he finished sixth in the all-around final and won a silver medal on the parallel bars. He then won the floor exercise bronze medal at the
2019 European Games, and he placed fourth in the all-around. At the Szombathely World Challenge Cup, he won silver medals on the parallel bars and horizontal bar and a bronze medal on the floor exercise. Pakhnyuk helped Ukraine win the team title at the
2020 European Championships, and he won the silver medal on the parallel bars. He injured his
tricep at the
2021 European Championships and had to withdraw from the event. Individually, he advanced into the
all-around final and finished 19th. He also advanced into the
parallel bars final and finished sixth. Pakhnyuk won a gold medal on the parallel bars and a silver medal on the pommel horse at the
2022 Koper World Challenge Cup. He left the Ukrainian national team at the end of the 2022 season due to a conflict with the new head coach after not being selected to the
2022 World Championships team. == Eponymous skills ==