NTT DATA Leaders

Representative Director and Senior Executive Vice President
Shigeki Yamaguchi

Mr. Yamaguchi has been Senior Executive Vice President & Representative Director of NTT DATA since 2018.

After initially joining Nippon Telegraph and Telephone Public Corporation (known as NTT) in 1984, Mr. Yamaguchi is now responsible for Japan's Public & Social Infrastructure. Additionally, he oversees NTT DATA's business in China and the Asia Pacific, where he has expanded both revenue and profit.

Before his current position, Mr. Yamaguchi served as head of the IT Services & Payments Services Sector and as head of the Enterprise Business Consulting and Marketing Sector.

Mr. Yamaguchi has extensive experience developing new business markets and digital transformation, driving NTT DATA's strength in business consulting, ERP, e-Commerce, Customer Experience, and payment services. In 2009, he led the establishment of QUNIE Corporation, an IT and management consulting company and a 100%-owned subsidiary of NTT DATA, specializing in business strategy and transformation.

He graduated from Hitotsubashi University with a bachelor's degree in economics in 1984 and has since authored "The future of management in digital economy – Economy of Wisdom™," in which he shares his insights into strategic management in the digital economy. He has also authored "Trust and Digital" to introduce examples for how digital can be used within management.