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Janaína Castro

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Performance focused on identifying and conducting strategic cases before the Federal Supreme Court (STF) and the Superior Court of Justice (STJ). Her work involves strategy definition, drafting of pleadings and amicus curiae briefs for lawsuits dealing with federal, state and municipal taxes, as well as customs and social security controversies. Has experience in segments such as oil and gas, food and beverages, automotive, banking, e-commerce, information technology, energy, pharmaceutical, pulp and paper, pharmaceuticals, chemicals, services and retail.


  • Brazilian Bar Association
  • Member of the Commission for Legal Practice in the Higher Courts of the OAB/DF
  • Member of the Commission on Tax Issues of the OAB/DF

Recent acknowledgments

  • Recommended by The Legal 500, 2021 edition, in City focus - Brasilia > Litigation


  • Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS ( Postgraduate in Human Rights, Social Responsibility and Global Citizenship, in progress).
  • Instituto Brasileiro de Estudos Tributários, IBET (Post-graduate degree in Tax Law, 2018).
  • Instituto de Educação Superior de Brasília, IESB (Bachelor of Law, 2014).