Csemez was scheduled to compete at the 2019 European U-22 Championships in Russia, but failed a medical exam that kept him out of the ring and awarded his opponent a walkover victory. However a few weeks later he won a gold medal at the second Euro Cup in Bijeljina, Bosnia and Herzegovina in his return to light heavyweight, and was given the best boxer award. Back at middleweight, he won a bronze at the 2019 European Games, which doubled as that year's European Championships. He lost his semi-final bout to rival Oleksandr Khyzhniak – his third defeat to Khyzhniak in as many match-ups. He then had an early exit at the World Championships, losing in his second fight.