Guilherme Afonso Dourado

Mariana is the Managing Partner and Head of Corporate and M&A at Leite, Tosto e Barros Advogados, bringing over two decades of experience in Corporate Law, Mergers & Acquisitions, Governance, Compliance, and Data Protection. As Managing Partner, she leads the firm’s strategic direction and ensures operational excellence across finance, IT, marketing, and administration—combining leadership vision with technical and business precision. As Head of Corporate and M&A, Mari...

André Blotta Laza is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. André Blotta, who practices law in São Paulo, Brazil, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which André Blotta is held by other top lawyers in the same geographic and legal practice area.

Veridiana Police is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Veridiana, who practices law in Campinas, Brazil, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Veridiana is held by other top lawyers in the same geographic and legal practice area.

JOSÉ THEODORO ALVES DE ARAÚJO Partner Office: São Paulo E-mail: taraujo@araujopolicastro.com.br Dir. phone: (55) (11) 3049-5705 Areas of Practice Corporate, Banking and Capital Markets, Infrastructure, Regulatory and Administrative Law. Education • Bachelor of Laws (LL.B.) from Universidade de São Paulo Law School – USP (1962); • Career improvement course on Financial System at Getulio Vargas Business School (1963); • Career improvement course ...

Partner Andreas has extensive experience in Labor, Employment, and Social Security Law, with a distinguished track record in strategic litigation and oral arguments before the Regional Labor Courts. He represents major investment banks and multinational corporations in the energy, metallurgy, telecommunications, construction, logistics, and outsourcing sectors in highly complex and institutionally significant disputes. He also represents Leite, Tosto e Barros and its clients before the Superi...

Specialist in Tax Litigation and Advisory, Fernando Westin has a robust background in leading tax litigation teams for both domestic and multinational companies. As a partner focused of the Tax Litigation team in São Paulo, Westin excels in administrative and judicial tax disputes, due diligence processes, and participation in amnesty and installment programs. Recognized as a Highly Recommended Lawyer by ITR World Tax, Highly Recommended by Chambers Brazil, and a Highlight in Best Lawy...

Zilma Aparecida S. Ribeiro, is responsible for the labour department of the firm, both in the litigation and in the advisory areas. She graduated in law from the Law School of the University of São Paulo from which she holds a Masters Degree. Ms. Ribeiro has over 30 years of experience working as a lawyer, both in-house and as a legal consultant. Ms. Ribeiro also completed a Specialization Course in Civil Procedure at the Law School of the University of São Paulo. She has been r...

Hamilton Dias de Souza is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Hamilton, who practices law in São Paulo, Brazil, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hamilton is held by other top lawyers in the same geographic and legal practice area.

Sylvio Fernando Paes de Barros Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation and Litigation. Sylvio Fernando, who practices law in São Paulo, Brazil, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sylvio Fernando is held by other top lawyers in the same geographic and legal practice area.

Arnoldo Wald Filho holds a Bachelor Degree in Law from Cândido Mendes University (1986) and a certificate in Advanced Mediation from Harvard Law School (2017). He is currently Federal Counsel of OAB São Paulo, President of the Institutional Relations Commission of OAB/SP, President of the Center for Mediation and Arbitration of the Portuguese Chamber of Commerce in Brazil and arbitrator of the Ciesp/Fiesp and FGV Chambers. Since 1986, he is Honorary Consul of Monaco in Brazil. Fo...