(2025 - Present) Patent Attorney, 

Gyeongsang National University, Jinju, Korea

(2022 - 2025) Patent Attorney, Pusan National University, Pusan, Korea

(2021 - 2022) Patent Attorney, JIEUM Law Firm, Seoul, Korea 

(2014 - 2021) Patent Attorney, PCR Law Firm, Seoul, Korea

(2011 - 2014) Senior Researcher, Institute of Medical Engineering, Hanyang University