She then attended George Washington University Law School, receiving a JD with high honors in 1984.
At GWU, she was a Notes Editor on The George Washington Law Review and a member of the Order of the Coif.
After law school, DeRosa spent a year as a clerk for Richard J. Cardamone, a Judge of the United States Court of Appeals for the Second Circuit.
After the end of the session, DeRosa returned to Washington, D.C., as a Distinguished Visitor from Practice at the Georgetown University Law Center.
[5] DeRosa is Senior Advisor at the Chertoff Group, a company that provides security and risk management advisory services.