[4] In 2018, at the age of 19, Khaotung was signed as an artist under the production and talent agency GMMTV after a casting manager saw his photos on social media and asked him to audition for the company.

[9] In 2020, Khaotung landed his first leading role as the titular character in the BL series Tonhon Chonlatee alongside Suphakorn Sriphothong.

[18] He also earned an Asia Television Awards nomination for Best Theme Song for "Over The Moon (คลาด)" which Khaotung provided lead vocals.

[19][20] In August, Khaotung played Ray, a wealthy university student suffering from alcohol addiction, in the ensemble cast series Only Friends.

[26][27] Later in the year, he worked again with Only Friends director Tichakorn Phukhaotong and on-screen partner Kanaphan Puitrakul, playing an assassin in the The Heart Killers.