Attorney Jong-Mun Park has 20 years of experience serving as a judge and judicial research officer at various levels of the judiciary, including the Seoul Central District Court, the Seoul High Court, and the Supreme Court of Korea.

Drawing on his extensive judicial experience, he has actively represented clients in major civil litigation matters and served as defense counsel in high-profile criminal cases. He has earned recognition both within and outside the legal profession by developing meticulous, stage-specific litigation strategies, maintaining close communication with clients, and presenting proactive and persuasive advocacy.

In particular, he has handled numerous disputes in the construction and real estate sectors and has also served as legal advisor to local governments, including Seongbuk-gu and Guro-gu in Seoul. From June 2019 to January 2024, he served as Secretary General of the Constitutional Court of Korea. He has since returned to One Law Partners, LLC as a Partner Attorney.