[5][6] In 2015, Joshua debuted as a member of the South Korean boy group Seventeen with the extended play 17 Carat on May 29.

[7] In 2020, Joshua and bandmate DK collaborated with American musician Pink Sweats on a remix of his song "17".

[8] In June 2022, Joshua released a cover of dhruv's double take as a part of Seventeen's ongoing #17Studio series.

[11] In March 2023, Joshua released two song covers as part of Apple Music's Home Session series.

[14] In May 2022, Joshua, alongside bandmate Seungkwan, was announced as a model for Laneige's "Neo Cushion" line.