2007 Prosecutor, Daejeon District Prosecutors' Office
2009 Prosecutor, Haenam Branch of Gwangju District Prosecutors' Office
2011 Prosecutor, Busan District Prosecutors' Office
2013 Prosecutor, Seongnam Branch of Suwon District Prosecutors' Office
2014 - ORNE HANEUL Attorneys at Law
2017 - Disciplinary Committee Member, Basic Science Research Institute
2020. 3. - Legal Advisor of Gyeonggi Province
2022. 8. - Private Sector Member of Self-Regulatory Review Committee of Anti-Corruption & Civil Rights Commission.
2022. 3. – 12. Advisory Member of Serious Accidents Punishment Act TF of Seoul Bar Association
2023. 9. - Adjunct Professor of Criminal Law at Gangnam University