Steve joined the World Wide Web Consortium in January 2002, serving first as COO and now CEO. He has primary responsibility for worldwide operations and outreach, including overall management of Member relations, the W3C Process, the Team, strategic planning, budget, legal matters, external liaisons and major events.

Prior to joining the W3C, Steve held leadership and research positions within industry and government, and served on scientific and arms control delegations. In 1997, he was named Coordinator of the Comprehensive Nuclear-Test-Ban Treaty International Data Centre in Vienna, Austria. There he was responsible for establishing the data center, global communications infrastructure, and standards for data exchange between more than 300 world-wide sensors and 170 nations. From 1984 to 1997, Steve led research initiatives -- first at Science Applications International Corporation and then as a program manager at Defense Advanced Research Projects Agency -- to develop advanced concepts for real-time sensor monitoring, intelligent analysis and international data communications. Since 1993, Web technologies have played the central role in support of the sharing of data, information and knowledge within the complex systems that he has designed and deployed.

Steve received his Ph.D. from the Massachusetts Institute of Technology, and his B.S. from the Pennsylvania State University.