Jayne, Julia Mezhinsky
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Julia Mezhinsky Jayne

  • Founder






Julia Mezhinsky Jayne is the founder of Jayne Law Group, P.C.

Ms. Jayne is an experienced and accomplished trial lawyer who concentrates her practice on both complex white collar matters and general criminal defense. She represents a broad array of individuals and small businesses in all stages of a criminal proceeding, in state and federal court, grand jury investigations, and administrative hearings. Her successes range from outright case dismissals and acquittals, to extremely favorable plea agreements. Ms. Jayne also has twenty years of jury trial experience in both state and federal court. Ms. Jayne is committed to making sure each client is satisfied with the result of his/her case. She is prepared to represent the low-profile or high-profile client, and has experienced handling the media and press in news-worthy cases.  

Her white collar criminal defense matters include prosecutions involving mail and wire fraud violations, bank & tax fraud, environmental crimes, money laundering, alien harboring, money smuggling, antitrust, immigration crimes, insider trading, false statements, identity theft, theft of trade secrets, tax evasion, and prosecutions with significant asset forfeiture implications.

Ms. Jayne's experience in general criminal defense runs the gamut -- from violent felonies and vehicular manslaughter to drug possession and sales, sexual assault, domestic violence, firearms offenses, juvenile offenses, theft and fraud cases, embezzlement, robbery, burglary, and driving under the influence.

Before founding Jayne Law Group, Ms. Jayne was a partner at the firm of Campbell & Jayne LLP. Ms. Jayne also previously served as a Deputy District Attorney in Contra Costa County. There, she tried a variety of misdemeanor, felony, and juvenile cases. In her role as a prosecutor, she filed criminal charges, negotiated thousands of cases, and independently tried over 30 jury trials. After leaving the District Attorney's Office, Ms. Jayne worked as a civil litigator at Larson · King in San Francisco. Thereafter, Ms. Jayne worked as a white collar criminal defense attorney and civil litigator at the prestigious San Francisco law firm, Sideman & Bancroft LLP, where she was involved in the representation of several high-profile white collar criminal defense clients.

Ms. Jayne is also an esteemed adjunct professor at U.C. Hastings College of the Law, where she has been teaching Trial Advocacy since 2003.

Ms. Jayne also served as a legal intern to the Organized Crime Strike Force for the Department of Justice, U.S. Attorneys' Office in San Francisco.

Ms. Jayne is fluent in Russian.

Areas Of Practice

  • White Collar Criminal Defense
  • General Criminal Defense
  • Complex Criminal Defense
  • Small Business Compliance & Internal Investigations


  • University of California, Hastings College of the Law, San Francisco, California
    • J.D. - 1999
  • Oxford University Faculty of Law, Oxford
    • Spring Semester - 1998
  • University of California, Los Angeles, California
    • B.A. - 1995
    • Honors: magna cum laude


  • Adjunct Professor of Trial Advocacy, University of California, Hastings College of the Law, 2003 to Present

Honors and Awards

  • Selected as a Super Lawyer in Northern California Super Lawyers®
  • Selected as a Rising Star in Northern California Super Lawyers®

Professional Associations and Memberships

  • Criminal Justice Act Panel ("CJA Panel") for the Northern District of California, Member, 2005 to Present
  • California State Bar Criminal Law Executive Committee, Past Chair and Advisor
  • Eastern European Bar Association, Northern California, Member
  • National Association of Criminal Defense Lawyers: Member of Diversity, Women, and White Collar Committees; and Regional West Coast Delegate of Membership Committee
  • Women’s White Collar Defense Association: Program Chair (San Francisco chapter); global social media committee; member

Past Employment Positions

  • Contra Costa County District Attorney's Office, Deputy D.A.
  • Sideman & Bancroft LLP, White Collar Criminal Defense Attorney and Civil Litigator
  • Larson · King, San Francisco, Civil Litigator
  • Campbell & Jayne LLP, Partner
  • Organized Crime Strike Force for the Department of Justice, U.S. Attorneys' Office in San Francisco, Legal Intern

Ancillary Businesses

  • Small Business Compliance & Internal Investigations


  • Russian