Nadja Vietz Attorney

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About Nadja

A woman wearing a gray blazer.

Nadja leads our Spain practice team, mostly by helping American and European companies in their foreign direct investments into Spain and Germany, and by assisting European companies with their foreign direct investments into the United States and Latin America. Nadja works out of Barcelona and Seattle, with frequent trips to Madrid, Los Angeles, and Miami as well.

Nadja has extensive experience in corporate and commercial law, real estate, private civil law, wills and probate, and international investments. With three law degrees and licenses to practice law in Germany, Spain, and the United States, Nadja is uniquely equipped to help our clients navigate cross-border transactions and legal disputes.

Nadja works fluently in German, Spanish, and English (she also speaks French and Catalan), and she has lived and worked as a lawyer in both the U.S. and Europe. She applies her broad legal knowledge and her experience from working in different work cultures to help our clients achieve their international business goals.

Multinational Expertise

Before joining Harris Sliwoski in 2004, Nadja was an attorney in Spain, primarily helping U.S., German, and French companies navigate Spain’s legal terrain. After splitting her time between Seattle and Barcelona for several years, with frequent trips to Germany as well, Nadja became the lead attorney in our Barcelona office.

Nadja has published on getting a United States court judgment enforced abroad and she frequently speaks before lawyer groups on international investment and cross border dispute resolution issues. Her multinational expertise has earned her an elite rating on Avvo as a “Superb” attorney.

Nadja was born and grew up in Herzberg, East Germany. She spends her spare time relaxing with family and friends, doing yoga and seeking out Barcelona’s best restaurants.

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Fast Facts


  • University Alma Mater Lipsiensis Law School, Leipzig, Germany (J.D.)
  • Faculté des Affaires Internationales, Le Havre, France (Diplome d’Études Universitaire Générales)
  • Ministry of Justice Saarbrücken, Germany and Ministry of Justice Madrid, Spain (Traineeship)
  • Spanish Ministry of Justice (Foreign Lawyers’ Qualifying Test)


  • German (Fluent)
  • Spanish (Fluent)
  • English (Fluent)
  • French (Basic)
  • Catalan (Basic)

Bar & Court Admissions

  • Germany
  • Spain
  • Washington

More About Nadja

  • Regular contributor to the award-winning Canna Law Blog and the HS Blog.
  • How to Make Sure Your U.S. Judgment Can Be Enforced Abroad, Global Gavel News, August 2008.
  • German Civil Code, Family Law and Estate Planning Sections, Marcial Pons, Ediciones jur. y sociales, 2008.
  • The New Law about Limited Liability Companies of the People’s Republic of China, GmbHRundschau/LLC Review, March 2006.
  • The new LLC in Spain, GmbHRundschau/LLC Review, January 2003.
  • Distributor or Commercial Agent for German companies in Spain: Legal Characteristics and Practical Indications, MessTec Automation, June 2003.
  • Spain: Your Bridge to Europe, Salt Lake City, Utah, April 25, 2023.
  • Program Chair, US-mentoring program of the Cambra Barcelona, June 16, 2022.
  • Doing Business in the U.S. Market, Chamber of Commerce of Madrid, Madrid, Spain, November 4, 2021.
  • Program Chair, US-mentoring program of the Cambra Barcelona, June 3, 2021.
  • Guest Speaker on The Global Law and Business Podcast, Episode 43 – FDI in Spain, February 16, 2021.
  • Investing and Doing Business in Spain, Harris Sliwoski webinar, November 19, 2020.
  • Panelist, Investing and Doing Business in Spain: A Legal Perspective, the International Trade Association of Greater Chicago (ITA/GC), November 17, 2020.
  • Spain After Covid-19: New Regulations Explained from a Practical Perspective, World Trade Center Utah webinar, September 29, 2020.
  • Spain After Covid-19: New Regulations Explained from a Practical Perspective, WSBA webinar, September 22, 2020.
  • The New Era of Doing Business in the US, Madrid Chamber of Commerce, Madrid, Spain, November 7, 2019.
  • The New Era of Doing Business in the US, Barcelona Chamber of Commerce, Barcelona, Spain, November 6, 2019.
  • Panelist, Doing Business in the Trump Era, Harris Sliwoski Seminar, Barcelona, Spain, October 25, 2017.
  • U.S. Jurisdiction: Risks and Strategies for German Companies, Advoselect, Czech Republic, 2008.
  • Going Global: Strategy and Risks from a Legal Standpoint, Annual Entrepreneurial Women’s International Trade Show, 2008.
  • Distribution Channels in Spain, Spanish Chamber of Commerce, Germany, 2003.
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  • Washington State Bar Association
  • German American Lawyers’ Association
  • VDA German Lawyers’ Association
  • American Immigration Lawyers Association
  • German Spanish Lawyers’ Association
  • Former President, Junior Entrepreneur Association of Barcelona
  • DASV German Lawyers and Accountants Association for Medium-Sized Businesses

Proven Expertise for Challenging Legal Issues