Jang Hee-ryung debuted in the entertainment industry in 2014 with appearances in the music videos for Bernard Park’s songs titled I’m… and Before the Rain. In 2015, she became part of several web series such Dream Knight and 72 Seconds. Her work in the former scored her the Best Rising Star citation at the 1st KWeb Fest. In 2016, she played a supporting character in the KBS2 series Uncontrollably Fond. That same year, she starred with Lee Ki-kwang in the web drama Mo-min’s Room. In 2017, she acted alongside Choi Woo-shik and Jang Ki-yong in another web drama called Some Guy, which won her Best Supporting Actress at the Seoul Webfest Awards. In 2021, she joined TV Chosun’s Uncle, which was followed by another supporting role in the 2022 tvN romantic comedy Shooting Stars.