Rosinsky's mother is actress K. Louise Middleton, studied with acting coach Sanford Meisner.

[2] Rosinsky had a role in the 2016 horror film The Other Side of the Door.

[3][4] In 2018, Rosinsky starred in the short film Faery, alongside Tessa Ferrer and William Ostrander.

[5] In 2019, Rosinsky played Zora Morris in the Disney Channel television miniseries Fast Layne.

[6][7] In April 2021, she was cast in a co-leading role of Mac Coyle on the Amazon Prime Video science-fiction television series Paper Girls,[8] which was released in July 2022.