Jang Jo-yoon initially started out as a midfielder while playing in his youth for Jeonbuk Hyundai Motors, but switched to a striker after he moved to the S. League team Super Reds in 2009.

Jang spent his first two seasons as a professional player with K League team Jeonbuk Hyundai Motors in his native South Korea, the first club he signed for when he was fresh out of high school.

In December 2012, it was noted that Jang was on trial with Woodlands Wellington when he was featured in the Northern Rams' lineup against Johor Darul Takzim in a pre-season friendly game.

[2] He made his debut for Woodlands Wellington on February 21, 2013 in a 2–2 draw against Warriors FC, assisting in Khalid Hamdaoui's 72nd-minute goal.

[4] After 6 years in Singapore, Jang returned to Korea to join Yongin City FC and played in the third tier of the South Korean league.