Sanzillo began working in the comptroller's office in 1994,[6] and was appointed first deputy comptroller by Alan Hevesi in 2003. After Hevesi's resignation, Sanzillo became acting New York State Comptroller from December 22, 2006, to February 7, 2007.[7][8]
Sanzillo served as acting comptroller until Thomas DiNapoli was elected by the New York State Legislature. DiNapoli reappointed Sanzillo as first deputy comptroller on March 7, 2007.[9] On July 26, 2007, Sanzillo resigned as from the position,[10] and is now[when?] the director of financial analysis at the Institute for Energy Economics and Financial Analysis.[11]