Stephen Welby is the GTRI Deputy Director for Research, leading the Sensors and Intelligent Systems Directorate (SISD). Stephen manages operations across three research areas: the Advanced Concepts Laboratory (ACL), the Aerospace, Transportation and Advanced Systems Laboratory (ATAS), the Sensors and Electromagnetic Applications Laboratory (SEAL), and the Cybersecurity, Information Protection, and the Hardware Evaluation Research (CIPHER) Laboratory. 

Stephen has more than three decades of government, non-profit, and industrial experience in technology and product development, including senior leadership positions at the Defense Advanced Research Projects Agency (DARPA).

Stephen most recently served as Special Assistant to the President for Science and Technology Policy and as Deputy Director for National Security in the White House Office of Science and Technology Policy (OSTP). Stephen led an OSTP team focused on strengthening the nation’s long-term global competitiveness and reducing risk through the assessment, development, deployment, and governance of current and emerging technologies. He oversaw efforts to develop long-term national science and technology (S&T) strategies, shape new investments in foundational technologies, modernize national security systems, ensure supply chain security, cultivate an agile innovation base, enhance export and investment controls, manage emergent risks and build the world's best STEM workforce. His focus areas included Biotechnology and Biosecurity, Artificial Intelligence, Semiconductors, Space Systems, Quantum Information Science, Nuclear Matters, and Economic Security.

Prior to joining the White House, Stephen was the Executive Director and Chief Operating Officer of the Institute of Electrical and Electronics Engineers (IEEE), the world’s largest not-for-profit organization of technology professionals.

In 2015, Stephen was confirmed by the U.S. Senate as the Assistant Secretary of Defense for Research and Engineering. In this role, he served as the Chief Technology Officer for the U.S. Department of Defense, leading one of the largest and most complex research, development, and engineering organizations in the world. Stephen previously was the Deputy Assistant Secretary of Defense for Systems Engineering, and was responsible for establishing and executing engineering policy and oversight across the Department.

Stephen holds a bachelor of science degree in chemical engineering from The Cooper Union for the Advancement of Science and Art, a master's degree in business administration from the Texas A&M University, and master's degrees in computer science and applied mathematics from The Johns Hopkins University.

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