Prior to Cornerstone, Stephen served as the Senior Counselor to the Deputy Secretary at the U.S. Department of the Treasury. In this role, he led policy coordination at the Treasury, supporting efforts including the OBBBA, the GENIUS Act, financial institutions policy and regulation, sanction actions and international affairs. Additionally, he supervised all Treasury policy and operations under the Deputy Secretary’s purview, including the offices of Domestic Finance, International Affairs, Terrorism and Financial Intelligence, Tax Policy, Legislative Affairs, Public Affairs and the Department’s many bureaus.

Stephen previously served as Director of Government Affairs for Mastercard, where he led the advancement of the company’s agenda with key federal policymakers, served as an internal strategic advisor, and oversaw Mastercard’s relationship with Congress, the Administration, trade associations, and key stakeholders.

Prior, he was the lead financial institutions policy Professional Staff Member for then Ranking Member Rep. Patrick McHenry (R-NC) on the House Committee on Financial Services. He operated as one of the key advisers to the committee during the CARES Act negotiations and creation of the Paycheck Protection Program.

Sandora previously served in the first Trump Administration as a Special Advisor in the Office of Economic Policy at the United States Department of the Treasury, was the Economic Policy Legislative Assistant for Sen. Shelley Moore Capito (R-WV) and a Legislative Aide for the late Rep. Mike Fitzpatrick (R-PA).

Stephen holds a Master’s in Business Administration from the University of Maryland and a Bachelor of Arts from The Catholic University of America. He and his wife, Christy, live in Chevy Chase, DC with their two boys, Jack and James.