John is an entrepreneur and technologist in the communications networking industry and currently works as an independent advisor to several high technology startup organizations. A long time participant in the networking business, Davidson has been actively involved in the commercialization of both Local Area Network and Internet technologies.

In 1979, Dr. Davidson became a founder of Ungermann-Bass, Inc. (UB), the networking industry's first local area networking (LAN) company. At UB, he served as the company's CTO and vice president of R&D. In 1993, Davidson left UB to found Network TeleSystems, Inc. (NTS), an Internet infrastructure company that supplied Internet Protocol software for ISPs, carriers and enterprise customers. Davidson served as chairman and CEO of NTS throughout its existence and was largely responsible for guiding its product strategies. When NTS was acquired by Efficient Networks in May 2000, Davidson served as vice president of new business initiatives in the corporate development group and was responsible for the investigation of new technologies, new market opportunities and new business relationships involving investment, joint development and M&A partnering.

Throughout his career, Davidson has been a popular public speaker, capable technical instructor and course leader, and a successful author. Along with writing many technical papers, he wrote the industry's first expository description of the Internet's underlying protocols, "An Introduction to TCP/IP," an offering in the Springer-Verlag Technical Series that has been translated into both French and Japanese language versions. He is active now as an angel investor in a number of software startup companies, currently serving as Chairman of EzRez Software, WhiteHat Security, Radio Time, and Tingo Corporation, where he has also assumed the role of CEO. He serves as an advisor to several other companies and to the Pacific Asian Center for Entrepreneurship and e-Business (PACE), a part of the Graduate School of Business at the University of Hawaii.