Lisa Daley Mangi is the Acting General Counsel for the National Nuclear Security Administration (NNSA), a position she has held since June 2025.
As the chief legal officer for the NNSA, Ms. Mangi advises the Administrator and senior NNSA leadership on all legal matters. She also oversees and provides strategic guidance to the 32 attorneys and professional staff who represent the agency in administrative litigation and provides counsel to NNSA programs on procurement, intellectual property, national security, environmental and other legal matters.
Ms. Mangi served as the NNSA Deputy Counsel for Procurement, Intellectual Property, and Technology Transfer for NNSA from 2021 to 2025. Before she joined the Department of Energy, she was a trial attorney for the National Labor Relations Board.
Ms. Mangi is a graduate of the University of Wisconsin and the University of Maryland School of Law.