Professor Koo joined Handong International Law School with a background in global corporate practice, international technology transactions, and sports and entertainment law. Professor Koo received his doctorate of jurisprudence degree from the Northwestern University School of Law (Dean's List), his master's degree in management from Harvard University with honors, and his master of laws degree in corporations law from the New York University School of Law.

He previously served as an adjunct law professor at Seoul National University, Kyung Hee University, and Sookmyung Women’s University. His teaching and research focus on Corporate Law, Sports and Entertainment Law, Alternative Dispute Resolution, and Entrepreneurship.

He began his legal career in private practice as a corporate associate at Kirkland & Ellis LLP. He later transitioned to corporate roles, serving as senior legal counsel and executive advisor for leading multinational tech, telecom, and video game conglomerates in the U.S. and South Korea. His experience includes directing cross-border commercial transactions, serving as lead legal counsel for large-scale mergers and acquisitions (M&A), securing foundational global patent portfolios, and leading complex investment renegotiations with foreign government entities that preserved thousands of industrial jobs, earning two internal excellence honors.

In the sports and entertainment sectors, Professor Koo has represented prominent public figures, including an NBA Hall of Famer and an Olympian, negotiating commercial, endorsement, and licensing deals with top-tier global sports leagues and brands. He is also an entrepreneur, co-founding ventures in real estate and sports management.