Kwon Hyun-bin began his career in the entertainment industry as a model in 2015. Two years later, he joined the second season of the Mnet reality competition show Produce 101, where he placed 22nd overall. This opportunity led to his debut in the six-member boy band JBJ, alongside fellow contestants from the show. They released their first extended play Fantasy in October 2017. That same year, Kwon Hyun-bin also made his acting debut with a supporting role in the MBC variety-drama Borg Mom and was soon cast in the lead role for the web series Temporary Idols.


In August 2019, Kwon Hyun-bin made his solo debut under the stage name Viini with the mini album Dimension. In 2021, he landed his first movie role in Twenty Hacker. In 2024, he starred in Lifetime’s debut drama Love, Andante, opposite Song Ji-woo.