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Sonia Tabriz advises companies that do business with the U.S. government. She has a broad government contracts and national security practice that spans compliance counseling, litigation and investigations.

Sonia counsels clients on the various statutory and regulatory obligations arising from federal contracts and grants. She has particular experience with accounting, cost and pricing, including the Cost Accounting Standards (CAS) and FAR Part 31 cost principles as well as navigating audits and other matters with the Defense Contract Audit Agency (DCAA) and Defense Contract Management Agency (DCMA). Sonia also assists clients with Section 889, cybersecurity, information governance, other transaction authority (OTAs), and suspension and debarment.

Sonia maintains a robust litigation practice, including bid protests at the U.S. Government Accountability Office (GAO) and Court of Federal Claims. Sonia also litigates contract disputes, including developing requests for equitable adjustment (REAs) and claims as well as appeals before the Boards of Contract Appeals (ASBCA and CBCA). Sonia has unique experience representing government contractors in federal district court in cases involving commercial disputes, class actions, the False Claims Act and the Administrative Procedure Act.

Sonia also manages internal as well as civil and criminal investigations of alleged misconduct or fraud, and advises on disclosures and strategic engagement with government stakeholders.

Sonia's clients span numerous industries including technology, aerospace and defense, professional services, educational institutions, healthcare, life sciences, and construction. She supports traditional and nontraditional contractors as well as grant recipients, including nonprofit organizations. Across all matters, Sonia is a trusted advisor. She leverages her experience and her deep understanding of each client’s business to develop a nuanced legal analysis and a tailored, practical approach that furthers the company's goals.

Sonia also maintains an active pro bono practice, including complex civil rights litigation and impact litigation relating to immigration, and serves on the firm's Pro Bono Committee.

Sonia graduated from The George Washington University Law School, where she served as Editor-in-Chief of the Public Contract Law Journal, and later rejoined as a Professorial Lecturer in Law and member of the Government Contracts Advisory Council. She is also an active member of the ABA’s Section of Public Contract Law. Sonia has been recognized as a "Rising Star," "Up and Coming," and "One to Watch" in the area of government contracts by legal publications and directories, and routinely speaks and publishes on recent developments and best practices.


Chambers USA
"Up and Coming" Government Contracts (Nationwide) (2024)
Who's Who Legal
Government (2023)
Best Lawyers
"Ones to Watch" — Government Relations Practice (D.C.) (2021-2024)



  • J.D., The George Washington University Law School
  • B.A., American University, summa cum laude, with University Honors


  • District of Columbia
  • Virginia
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Court of Appeals for the Fourth Circuit
  • U.S. Court of Appeals for the Tenth Circuit
  • U.S. Court of Federal Claims
  • U.S. District Court, District of Columbia
  • U.S. District Court, Eastern District of Virginia
  • U.S. District Court, Western District of Virginia
  • U.S. Bankruptcy Court, Eastern District of Virginia


  • Professorial Lecturer in Law, The George Washington University Law School
  • Member, Law360 Government Contracts Editorial Advisory Board
  • American Bar Association, Section of Public Contract Law (Cybersecurity, Privacy, and Emerging Technology Committee Vice Chair; Strategic Committee Member; 2021–2022 Procurement Division Co-Chair; 2019–2021 Young Lawyer Council Member; 2020–2021 Conference Director; 2014–2021 Public Contract Law Journal Associate Editor; 2017-2020 Young Lawyers Committee Co-Chair; 2017 Public Procurement Symposium Co-Chair; 2016–2017 Executive Officer Mentee to the Chair of the Section)
  • Member, GW Law Government Contracts Advisory Council
  • Boards of Contract Appeals Bar Association (Associate Editor & Case Digest Author, Boards of Contract Appeals Bar Journal)
  • Vice Chair, Cybersecurity, Data Privacy and Global Technology Committee, D.C. Bar International Law Community