Julie Brinn Siegel has spent more than a decade at the intersection of economic policy, financial regulation, and government administration. She served as the federal government’s Deputy Chief Operating Officer under President Joe Biden and, earlier in his Administration, as Secretary Janet Yellen's Deputy Chief of Staff. In July 2024, Julie was nominated to be a commissioner of the Commodities Futures Trading Commission.

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 Senior Counsel for Economic Policy, where she led the senator’s economic policy, financial markets, banking, consumer protection, tax, and labor teams and conducted oversight. 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 Council of Economic Advisers, and for the White House Chief of Staff.

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