U.S. Ambassador to Spain and Andorra Julissa Reynoso Rejoins Winston & Strawn

Winston & Strawn LLP announced today the return of Julissa Reynoso as a partner in the firm’s New York office and as a member of its Litigation Department. Julissa is an experienced diplomat, policymaker, and lawyer, and was a Winston partner from July 2017 to December 2020.

She rejoins the firm after serving as U.S. Ambassador to Spain and Andorra from January 2022 to July 2024, the first woman to hold the position.

In her role as Ambassador, Julissa oversaw a critical U.S. mission with a host of U.S. federal agencies covering economic, political, and defense and security matters. She was a tireless advocate for American companies doing business in Spain, and supported historic levels of investment by Spanish companies in the United States. During her tenure, Spain served as host of the 2022 NATO Summit and held the presidency of the Council of the European Union.

Prior to being confirmed as Ambassador, Julissa served in senior positions at the White House, including as Assistant to the President and Chief of Staff to Dr. Jill Biden. In those roles, she managed a range of domestic and international matters and served as Co-Chair of the Gender Policy Council, the first policy council focused on gender equity and equality within the Executive Office of the President.

During the Obama Administration, Julissa served as Deputy Assistant Secretary of State in the Bureau of Western Hemisphere Affairs and later as the U.S. Ambassador to Uruguay.

“During my three years as a partner at Winston, I witnessed the incredible talent, creativity, and the depth of knowledge of my colleagues, each committed to the firm’s diverse roster of global clients,” said Julissa. “It is an exciting time to rejoin the firm, and I look forward to supporting the new leadership team by helping to grow the firm’s global client base.”

Julissa will focus on complex commercial litigation, regulatory enforcement, international arbitration, and cross-border disputes. She will provide U.S. and international clients with strategic advice and risk assessment in managing transnational issues.

“Julissa’s exceptional background in international relations will add considerable value for Winston’s clients,” said Peter Crowther, managing partner, international affairs. “Her ties to international clients will also be instrumental in advising their businesses throughout the world including in the United States.”

“We have followed Julissa’s accomplishments in government service with the utmost pride and are privileged to welcome her back to Winston,” said Winston Chairman Steve D’Amore. “Julissa is a prime example of the global talent Winston has attracted through a culture built on cross-practice collaboration, mentorship, and client focus. Thinking and acting as a single global unit is a strategic priority for Winston, and Julissa will be an integral part of that journey.”

Winston & Strawn LLP is an international law firm with 15 offices in North America, South America, Europe, and Asia. More information about the firm is available at www.winston.com.

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