Noah Greene is the senior program officer for the Transatlantic Defense and Security Program at the Center for European Policy Analysis (CEPA), where he facilitates the research and programmatic functions of the team. His portfolio covers the entire European continent and the full range of functional topics related to defense. He regularly speaks and publishes on topics including NATO institutional dynamics, transatlantic defense strategy, military technology, and emerging security challenges.

Before joining CEPA, Greene was a research assistant for the Artificial Intelligence Safety and Stability Project at the Center for a New American Security, where he worked with four programs — along with the executive vice president and director of studies — to coordinate research activities across multiple lines of effort. His research agenda included investigating the military applications of AI in the United States, Europe, Russia, and China, as well as European decision-making on AI more broadly.

Greene's work has been published in Lawfare, Tech Policy Press, Encompass Europe, and other outlets. He also holds a range of institutional affiliations, including as a junior associate fellow at the NATO Defense College and a member of the Global Perspectives on AI-NC3 Dynamics Working Group at the Institute for Security and Technology.

He earned a Master of Arts in Public Policy and Administration from Northwestern University, specializing in global policy, with research focused on foreign policy decision-making, international negotiations, European affairs, and international institutions. Greene received his Bachelor of Arts in Political Science from the University of Alabama and currently serves as a fellow for the Blackburn Institute at the university.