Jin Ki-joo was previously an employee of Samsung SDS and then worked as reporter for SBS regional affiliate G1 before starting her acting career.

She got nominated and won several major film awards with her role as a snarky and playful country girl who yearns for the big city in Little Forest.

[7][8] Jin played the protagonist role in KBS2's 2020 family weekend drama Homemade Love Story.

[11] She acted as a journalist and daughter of assassinated presidential candidate in the 2024 period series Uncle Samsik starring acclaimed film actor Song Kang-ho.

[12] Jin was cast in MBC's action comedy Undercover High School planned to be broadcast in 2025.