Yoshioka won the bronze medal with the Japanese junior team in 1995 behind Germany and Austria at the junior world championships in Gällivare, Sweden . In the same year he had his first appearance in a World Cup competition in his home town of Sapporo . With 18th place he was able to collect his first World Cup points. After he was able to improve this result two years later with 14th place, he became an integral part of the Japanese World Cup team.
In 1998, Yoshioka was able to record several top ten placements and finished ninth overall at the Four Hills Tournament . He was able to improve this result in his most successful season in 1998 and finished sixth overall. In the overall World Cup he was thirteenth. He could only rarely repeat these good results for the next few years. Only in 2001 could he get two top ten results. In Park City, USA, he celebrated his first and only podium. When Adam Małysz won , he finished third, which secured him a place in the Japanese team at the 2001 Nordic World Ski Championships . He was able to take 19th place on the normal hill and just missed a medal with the team in fourth place.
In the following years his results got worse and worse. In 2002 he was only able to qualify for the second round with difficulty, so that he has not been a member of the Japanese World Cup team since 2003. Yoshioka has started in the Continental Cup and the FIS Cup in recent years .
At the Winter Asian Games 2011 in Almaty , whose jumping competitions were held on the newly built hills of the Gorney Gigant complex , Yoshioka won the silver medal on the normal hill behind Kazakhs Yevgeny Lyovkin . From the large hill and with the team, he was able to secure the title and won gold each time.
In March 2015, Yoshioka competed in his last international jumping competition in Sapporo .
Japan
