Ki Sang Jung has 15 years of judicial experience in a variety of civil, criminal, and administrative matters at all levels of courts. In particular, he has experience in dealing with a number of important cases in the areas of taxation, administration, real estate, and construction, and is well versed in the trial practice of these areas.

Mr. Jung is well versed in both theory and practice and served as a member of the writing committee of the "Court Practice Guidelines (Administration)", which is used by judges as a practical guide, and the "Commentary on Administrative Litigation Act," which is considered an authoritative legal commentary on administrative litigation. He also co-authored Eminent Domain-A Complementary Perspective- at Cambridge University through a long research in real estate and construction laws.

Mr. Jung authored more than 10 books and 50 papers and received numerous academic awards, including Law Papers Award from the Korean Society of Law, which is one of the most prestigious legal award, in recognition of his achievements. He is widely recognized for his expertise and served as a thesis judge for a number of academic journals (Legal, Justice, Judicial, etc.) registered with National Research Foundation of Korea and conducted several national research to improve the real estate and construction sectors with the Korea Development Institute (KDI).

Furthermore, he has various experiences in judicial administration, including working as a planning judge of the Seoul Administrative Court and a professor of judicial training at the Judicial Research & Training Institute.