Prior to opening her own firm, Marsanne worked for the San Francisco District Attorney’s office for ten years, first as an Assistant Investigator and then as an Assistant District Attorney.

As a prosecutor, Marsanne charged and prosecuted over 600 criminal cases, including cases involving gang-related activities, DUIs, child assault cases, and many others.

During this time she gained extensive trial experience, achieving a conviction rate above 90%. Her knowledge, skills, and experience of prosecutorial procedure is a benefit to her clients.