Julie Brinn Siegel is a nonresident senior fellow at the Atlantic Council GeoEconomics Center’s Economic Statecraft Initiative. Siegel is an expert in financial regulation, policy development, and government administration, having held multiple leadership roles across all three branches of government over the past fifteen years.

From June 2023 to January 2025, she served as the federal government’s deputy chief operating officer at the Office of Management and Budget (OMB). In this role, she oversaw government-wide implementation of key priority initiatives, financial management, procurement, information technology and cybersecurity, performance management, and federal workforce issues. In July 2024, then US President Joe Biden nominated Siegel to be a commissioner of the Commodities Futures Trading Commission.

Before joining OMB, Siegel served as then US secretary of the Treasury Janet Yellen’s deputy chief of staff. In this role, she managed policy issues related to financial markets and institutions, national security and illicit finance, and tax administration and policy. Prior to her service at the US Department of the Treasury, Siegel led the Biden-Harris transition team’s efforts related to economic policy personnel. Siegel previously worked in the US Senate as Senator Elizabeth Warren’s (D-MA) senior counsel for economic policy, where she led the senator’s economic policy, financial markets, banking, consumer protection, tax, and labor teams.

Prior to working on Capitol Hill, Siegel was counselor to the general counsel and senior advisor in the Office of the Director at the Consumer Financial Protection Bureau. Earlier in her career, Siegel worked for the Office of the White House Counsel, the White House Council of Economic Advisers, OMB, and former White House Chief of Staff Bill Daley. She also served as a law clerk for Judge Peter J. Messitte of the Federal District Court for the District of Maryland.

Siegel is a graduate of the University of Pennsylvania and Harvard Law School.