• Member of AICPA Peer Review (for quality accounting firms)​

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• Ernst & Young L.L.P., Head of Korean Business Group

• Ernst & Young L.L.P., Senior Manager

• Coopers & Lybrand L.L.P., Manager

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• Audited companies with sales and assets over billions dollars

• Successful mergers and acquisitions with due diligence work

• Audit, tax and special project engagements in more than 50 industries

• Successfully resolved international and domestic tax audits

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• Advisor to Korean Chamber of Commerce and Industry of U.S.A., Inc.

• Advisor to Korean American Scientists and Engineers Association

• Advisor to Palisades Park Chamber of Commerce, Inc.

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• Member of American Institute of Certified Public Accountants

• Member of New York State Society of Certified Public Accountants

• Member of New Jersey State Society of Certified Public Accountants

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• Registered CPA of The State of New York

• Registered CPA of The State of New Jersey

• Registered CPA of The Commonwealth of Massachusetts

• Registered CPA of The State of California

• Registered CPA of The State of Hawaii