Chief of Staff to the Deputy Secretary of War at United States Department of War
📍 United States
Bryn Woollacott MacDonnell is a key financial leader in the U. S. government, currently serving as the acting Under Secretary of Defense (Comptroller)/Chief Financial Officer. Her career includes extensive experience in national security and defense appropriations, having served as a National Security Advisor in the U. S. House of Representatives and in roles at the White House. She holds a Master of Public Policy from the University of Maryland.
Originally from Los Angeles, Bryn has built a career centered on public service, specializing in International Security and Economic Policy. Her work demonstrates a deep commitment to national security programs and defense financial management, reflecting a career-long dedication to these critical areas of government.
She recently testified before the Senate Armed Services Committee regarding the Department of Defenses fiscal year 2026 budget request.
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Experience
11 Years
Current Role
Chief of Staff to the Deputy Secretary of War
Location
United States
Personality Overview
How Bryn shows up
Systematic
Not Easily Convinced
Value Seeker
They prefer to do thorough analysis of any situation. It is quite likely of them to ask for pricing or other concessions. They generally do not appreciate an overfriendly approach and prefer to stay to-the-point.
Priorities
Topics Bryn cares about
Defense Budgeting
Currently serves as the acting DoD Comptroller/CFO, testifying before Congress on the fiscal year 2026 budget and overseeing all budgetary and fiscal matters for the department.
National Security
Her entire career has been focused on national security, from roles as a National Security Advisor for Congressman Ken Calvert to positions at the Office of Management and Budget.
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Career
Work history
4-2025
Chief of Staff to the Deputy Secretary of War
United States Department of War
1-2025 - 8-2025
PTDO Undersecretary of Defense (Comptroller/CFO)
United States Department of War
1-2025 - 4-2025
Special Assistant to the Secretary of Defense
United States Department of War
8-2023 - 1-2025
National Security Advisor, Congressman Ken Calvert (CA-41)
U.S. House of Representatives
2-2022 - 8-2023
Military Legislative Assistant, Congressman Doug Lamborn (CO-5)
U.S. House of Representatives
In the press
Media appearances
No media yetWe could not find public media appearances for this person.
Calculativeness (C) reflects the degree to which a person is likely to be cautious, systematic and analytical. Those scoring high tend to emphasise quality and accuracy.
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