Our People

siwoo-law

Meet Our Legal Professionals

Seong-Jun Hwang
Partner

hsj@siwoo-law.com

Partnership Disputes; Corporate Advisory; Criminal Defense; Antitrust & Fair Trade; Labor & Employment

Our Professionals

Seong-Jun Hwang, Attorney at Law, graduated with honors from law school and gained early experience through training at the Legal Training Institute of the Prosecutors’ Office and internships at Yulchon LLC. He later served as Senior Counsel at Hyundai Motor Company, where he handled antitrust, strategic investments, and corporate criminal matters.

He is one of a limited number of attorneys certified by the Korean Bar Association as a specialist in startup law. In addition to traditional corporate advisory, he has extensive experience handling a wide range of business disputes, regardless of company size. He is also the author of “Why Do Business Partnerships Fail?”, and is widely recognized as a leading expert in partnership disputes in Korea.

He has further established his reputation in criminal law by handling high-profile cases and is a certified specialist in Criminal Law, as recognized by the Korean Bar Association, providing effective defense and achieving strong results for his clients.

Experience

  • Attorney at Law (2016–Present)
  • Certified Tax Accountant (2020–Present)
  • Patent Attorney (2021–Present)
  • Certified Specialist in Startup Law, Korean Bar Association (2023–Present)
  • Certified Specialist in Criminal Law, Korean Bar Association (2023–Present)
  • Member, Workers’ Rights Committee, Seoul Metropolitan Government (2023–Present)
  • Interview Committee Member for Public Officials, Seoul Metropolitan Government (2023–Present)
  • Technical Protection Expert, Gyeonggi Intellectual Property Center (2022–Present)
  • Auditor, ADAS Lab Co., Ltd. (2024–Present)
  • Auditor, Converz Co., Ltd. (2022–2023)
  • Legal Advisor, Datas Lab Co., Ltd. (2024–Present)
  • Legal Advisor, Medility Inc. (2022–Present)
  • Legal Advisor, W Club Co., Ltd. (2023–Present)
  • Legal Advisor, Pestmedi Co., Ltd. (2023)
  • Legal Advisor, Save the Boss Co., Ltd. (2023)
  • Court-Appointed Defense Counsel, Supreme Court of Korea; Seoul Central District Court; Seoul Northern District Court (2022–2023)
  • CEO, Barun Platform Institute Co., Ltd. (2022–Present)
  • Former Managing Partner, Myungjae Law Firm (2022–2024)
  • Former Senior Counsel, Legal Department, Hyundai Motor Company (2017–2022)
  • Former Attorney, Dambak Law Office (2016–2017)
  • Former Legal Intern, Yulchon LLC; Yoon & Yang LLC; Barun Law LLC (2014)

Education

  • - Graduate, Kyungmoon High School, Seoul (2007)
  • - B.A. in Economics, Sungkyunkwan University (2013)
  • - J.D., Pusan National University Law School (2016)
  • - Executive Program in Digital Finance and Virtual Asset Investment, Yonsei University (2023)

Activities

  • [Publications & Lectures]
  • - Why Do Business Partnerships Fail?, Parkyoungsa (2026)
  • - Workplace Harassment Training (Ministry of Employment and Labor Mandatory Program) – Hyundai Motor, POSCO, Hanwha, Korea Expressway Corporation, and other major corporations
  • - Information Security Training (Ministry of Employment and Labor Mandatory Program) – Celltrion, Veterans Hospital, and other major corporations

  • [Media]
  • - “Hackers Instructor ‘Slave Contracts’…Fair Trade Commission Orders Correction of Unfair Terms,” Yonhap News / TV Chosun (2025)
  • - SBS Morning Wide – Electric Vehicle Fire in Cheongna, Incheon (2024)
  • - SBS News Briefing – Multiple Legal Commentary Appearances (2024)
  • - “Fact Check: No Remedy if Job Offer is Withdrawn Before Signing Employment Contract?” Edaily (2023)
  • - “Job Offer Withdrawn Just Before Start Date—What Can You Do?” LawTalk News (2023)
  • - “Constitutional Court Hearing on Publishing Industry Promotion Act,” Law Issue (2023)
  • - Various Legal Commentary Contributions, LawTalk News (2022)
  • - “Who Represented Choi Soon-sil?” News Tomato (2016)

Languages

  • Korean, English
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