Seung-Kook Synn Senior Foreign Attorney
신승국 변호사.jpg
  • TEL 82 2 6182 8502
  • FAX 82 2 6003 7016
  • E-MAIL
Seung-Kook Synn, as senior foreign attorney of Yoon & Yang LLC, provides strategic counseling on corporate legal affairs, including ESG, international transactions, intellectual property rights, M&A, antitrust and risk management, etc.
Starting with the Legal Team of SK Corporation, Mr. Synn has served as General Counsel and Senior Vice President of major companies of SK Group, including SK Telecom, SK Energy, and SK Hynix for their Legal, Corporate Relations and Corporate Sustainable Management Division. While working more than 30 years as a strategic practitioner for SK, he introduced a full-scale compliance program for SK's flagship companies and established a basic policy plan for ESG (e.g. RE100, etc.), which are his signature leading achievements.


  • 2020-present Yoon & Yang LLC
  • 2020 Senior Advisor to CEO, SK Hynix
  • 2016-19 Senior Executive Vice President / Corporate Sustainable Management, SK Hynix
  • 2014-15 Senior Executive / Corporate Relations, SK Hynix
  • 2011-13 Vice President / CR Strategies, SK Energy
  • 2010 Vice President / Energy and Environmental Policies, SK Energy
  • 2008-09 General Counsel, SK Energy
  • 2006-08 Business Legal Affairs Manager, SK Energy
  • 2005-06 General Counsel, SK Telecom
  • 2001-05 Adjunct Processor, Sookmyung Women’s University College of Law
  • 2000-05 General Counsel, SK Telecom
  • 1997-00 Global Legal Affairs Manager, SK
  • 1988-93 Legal Affairs Team, SK (formerly Yugong)


  • 1997 Vanderbilt Law School, J.D.
  • 1994 Cornell Law School, LL.M.
  • 1987 Yonsei University Graduate School of Law, LL.M.
  • 1984 Yonsei University College of Law, LL.B.


  • Asia’s Most Dynamic Corporate Counsel of 2009 (ALB: Asian Legal Business)


  • Practices of General Meeting of Shareholders and Board of Directors (co-author; Jisan, 2001), Energy Law and Policy (compiled by JO Hong-sik; Pakyoungsa, 2013), Introduction to Climate Finance (co-author, Heute Books, 2022)

  • Research on Financing Lease (Master’s Thesis at Yonsei University Graduate School, 1987)