Mr. McGuire has served as Court Administrator and Clerk of the Supreme Court of California since July of 2012. Before assuming his current role as court administrator, Mr. McGuire served as managing attorney of the Court of Appeal, First Appellate District, for nearly a decade. He previously served as both a writ attorney and divisional attorney in Division Three of the First Appellate District. Before joining Division Three, Mr. McGuire was of counsel to the appellate department of the Oakland law firm of Crosby, Heafey, Roach & May, P.C. (now Reed Smith).
Mr. McGuire has also served as an attorney on the chambers staffs of California Supreme Court Justice Janice Rogers Brown (1996–1999) and Justices Robert L. Dossee and John E. Benson of the First Appellate District (1991–1996). He was an associate with Morrison & Foerster LLP (1987–1991) and served as law clerk to Judge Cynthia Holcomb Hall of the United States Court of Appeals for the Ninth Circuit (1986–1987). He is a 1986 graduate of Stanford Law School.
In addition, Mr. McGuire is a current member of the Appellate Advisory Committee, the California Appellate Court Clerks Association, the Power of Democracy Steering Committee, the Appellate Court Security Committee, and the National Conference of Appellate Court Clerks.