Jenifer Mackby is a Consultant at the National Academy of Scientists and the InterAcademy Partnership, where she is co-director of a project on a Biological Weapons Convention Scientific Advisory Body. She is also a Non-Resident Executive Fellow at the Geneva Centre for Security Policy, and a Senior Advisor at the Partnership for a Secure America. Previously, she was a Fellow at the Center for Strategic and International Studies, a Senior Fellow at the Federation of American Scientists, and a Senior Political Affairs Officer at the United Nations. She has led projects on U.S.-U.K. Nuclear Cooperation, Asian Trilateral Nuclear Dialogues, Debating 21st Century Nuclear Issues, and a Russian-European project on bioterrorism, among others. She served as Secretary of the negotiations on the Comprehensive Nuclear-Test-Ban Treaty (CTBT), the Working Group on Verification of the CTBT Organization Preparatory Commission, a Review Conference of the Biological Weapons Convention, a UN Conference on Outer Space, and the Environmental Modification Convention Review Conference.

Ms. Mackby was selected as Rapporteur for numerous international meetings, including the OSCE, European Commission Interparliamentary Conference, Wilton Park, and a study on Strengthening the IAEA. She has written extensively on international security and non-proliferation and co-authored or contributed to eight books, including: The Nuclear Tipping Point: Why States Reconsider their Nuclear Choice; Detect and Deter: Can Countries Verify the Nuclear Test Ban?; The Final Test; Global Biosecurity: Towards a New Governance Paradigm. She has written articles for theNew York Times, Newsweek, the Bulletin of the Atomic Scientists, The Nonproliferation Review, Arms Control Today, and other journals. She is fluent in French and Spanish, and has spoken on the above subjects at meetings in Austria, Canada, Chile, China, Japan, Jordan, the Netherlands, Qatar, South Korea, Switzerland, the U.K., and the U.S.