Kateryna Korniienko was born in Kyiv, where she currently lives. She graduated from the Kyiv-Mohyla Academy. In 2012, she received an award from the Smoloskyp publishing house literary competition. She has worked as a copywriter and as a writer for computer games and visual novels, and has been translating books since 2021. She also works as a translator and editor on documentary television projects.
In 2024, her debut novel Dyvokrovtsi received the “Debut of the Year” award from the literary portal Barabuka. In 2025, the novel was nominated by Ukraine for the European Science Fiction Society Award in the Best Young Adult Work category.