He made his debut as an actor in the 2006 comedy series Unstoppable High Kick, and since then has gone on to star in the Japanese drama Kaitō Royale (2011) and 7th Grade Civil Servant (2013).

[5] Hwang was a television actor, having played roles in MBC's 2006 comedy sitcom Unstoppable High Kick and then in KBS2's 2008 teen drama Jungle Fish.

[10] In 2008, he took part in Mnet's Hot Blood Men which follows the extreme training of 13 trainees in order to become a member of the boy band One Day.

In 2011, Hwang making a cameo appearance in Dream High as Oh-sun's imaginary boy (episode 12)[12] and Japanese drama Kaitō Royale as Jack[13] On January 23, 2013, Hwang had a supporting role in a spy romantic comedy series, 7th Grade Civil Servant as Gong Do-ha.

[26] He then starred in promotional web series produced for Lotte Duty Free Shop, Secret Queen Makers in the first and second episodes.

[27] In 2018, he made a cameo appearance in the romantic-comedy drama Touch Your Heart he played the role of a delivery man who catches the eye of timid lawyer Dan Moon Hee (Park Kyung Hye).

[31] On April 30, 2021, Hwang's drama So I Married the Anti-fan premiered on Naver TV, with simultaneous broadcast through V Live and global platforms iQIYI, Viki and Amazon Prime Video in Japan [32] The drama was originally filmed in 2018 [33] and based on the 2010 novel So I Married The Anti Fan, which was made into a webtoon and also adapted into a Chinese film [34] On December 15, 2021, Hwang announced that he would be ending his contract with JYP Entertainment in January 2022.