Ms. Kostoreva is an accomplished civil litigation attorney with extensive experience practicing in both California state and federal courts. She has significant expertise in law and motion practice and regularly handles complex procedural and substantive issues. With nearly a decade of legal experience, Ms. Kostoreva has built a distinguished career spanning both U.S. and international markets.

She began her legal career in Moscow, Russia, where she played a key role in the legal oversight of a non-commercial organization that operated one of the largest endowment funds in Russia. She later served as Legal Counsel at a large industrial and engineering company, where she expanded her expertise in corporate governance and transactional matters. She subsequently became Senior In-House Counsel for the digital advertising market at GroupM, the Russian office of WPP — one of the largest global media holdings. In this role, she advised on complex issues involving digital advertising law, data protection, and legal support for a portfolio of major international brands. In 2025, Aleksandra Kostoreva was recognized by Marquis Who’s Who Top Lawyers for her dedication, achievements, and leadership in the legal industry.