2015–present: Red Velvet and solo activities
Yeri was introduced as a new member of Red Velvet on March 10, 2015, during the promotions of their first extended play (EP) Ice Cream Cake. From May 9 to November 14, Yeri hosted MBC's music program Show! Music Core together with Minho from Shinee and N from VIXX.
In July 2016, Yeri played the female lead in the music video for J-Min and Shim Eun-jee's single "Way Back Home", which was released as part of the project SM Station. In 2016, Yeri became an MC for the SM C&C web-variety program The Viewable SM together with Leeteuk.
In December 2017, singer Ragoon released his EP Talking, whose lead single "Story" was co-written by Yeri.
In April 2018, Yeri was confirmed as part of the cast of JTBC's new variety show Secret Unnie together with Han Chae-young. On December 13, Yeri, together with NCT's Renjun, Jeno and Jaemin, took part in the third season SM Station. They released the official Korean soundtrack version of "Hair in the Air" from the television series Trolls: The Beat Goes On!.
On March 14, 2019, the music video for Yeri's first self-composed solo project "Dear Diary" was released as a part of SM Station Season 3. The same month, Yeri was confirmed as part of the cast of Law of the Jungle in Thailand. In May, she featured in South Korean rapper Giant Pink's song "Tuesday is better than Monday".
On June 8, 2020, the first episode of Yeri's reality-variety show Yeri's Room aired on the YouTube channel Dum Dum Studio. New episodes premiered every Monday and Wednesday, with special clips uploaded every Friday. The guest in the first episode was Twice member Nayeon. On July 24, Yeri participated in the NCSOFT Fever 2020 Cool Summer Project and released a remake of "Woman On The Beach" by Cool as a collaboration with AB6IX Jeon Woong and Ravi. On August 7, the third song remake in the project, "Sorrow", was released. Yeri appeared in the music video along with Ravi and Kim Woo-seok.
In February 2021, Yeri was cast in tvN's one-act drama Drama Stage in the episode "Mint Condition". On April 7, Yeri was cast as female lead of the web series Blue Birthday. In May 2023, Yeri was cast as female lead on Wavve web series Bitch X Rich.
On April 4, 2025, SM Entertainment announced that its exclusive contract with Yeri had ended, but she will remain in Red Velvet and be involved in all future group activities. On May 1, Yeri signed a contract with Blitzway Entertainment as an actress.
