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Marcus Vinicius Barbosa

For more than twenty years he has devoted his practice to Public Law, with a focus on Constitutional, Administrative, Regulatory and Tax Law, in judicial, administrative and arbitral proceedings, for private clients and for the Government, in the water and sanitation, energy, piped gas, concessions and PPPs, technology, and oil and gas sectors.

He has been a State Attorney of Rio de Janeiro (Procurador do Estado) since 2013. From 2021 to 2026 he was General Counsel of the Rio de Janeiro State Energy and Sanitation Regulatory Agency (AGENERSA), advising its Board of Directors on the regulation of the largest water and sanitation and piped gas concession contracts in Brazil. He headed the State Tax Debt Collection Office (2016–2018) and served as an advisor to a Justice of the Brazilian Supreme Court (2015–2016). He was an Attorney of the National Treasury (Procurador da Fazenda Nacional, 2007–2013) and a Municipal Attorney of Nova Iguaçu, appointed through a public competitive examination. He began his career in the tax practice of Machado, Meyer, Sendacz e Opice Advogados (2002–2005) and was head of Capital Markets at Lima Feigelson Advogados (2021–2022).

  • Doctorate in Public Law (UERJ, 2026) and Master’s degree in Tax Law (UERJ, 2013).
  • Master of Laws (LL.M.), Columbia Law School (2019), Harlan Fiske Stone Scholar and recipient of the Parker School Recognition of Achievement in International and Comparative Law.
  • MBA in Investments and Private Banking, IBMEC (2021).
  • Executive education at Harvard Kennedy School in Infrastructure Financing, Regulation and Management (2025), among other programs.
  • Postgraduate specialization in Tax Law, FGV Direito Rio (2011).
  • Bachelor of Laws, UERJ (2004).

Visiting professor in the LL.M. in Infrastructure and Regulatory Law at FGV Direito Rio, the postgraduate program in Regulatory Law at UERJ and the postgraduate program in Tax Law at Mackenzie. Author of articles in specialized journals, edited volumes and the press. Speaker in Brazil and abroad.

Special Committee on Tax Affairs and Capital Markets Committee of the Rio de Janeiro Bar Association (OAB/RJ). Brazilian Association of Fiscal Law (ABDF) and International Fiscal Association (IFA).