Sisi has experience in economic sanctions administered by the Office of Foreign Assets Control (OFAC), the Export Administration Regulations (EAR), the International Traffic in Arms Regulations (ITAR), and the Committee on Foreign Investment in the United States (CFIUS).

Prior to joining ArentFox Schiff, Sisi was an Associate at a boutique international trade law firm focused on technology companies. While in law school, she served as a judicial extern to the Honorable Robert McDonald of the Maryland Court of Appeals.