Our professionals

Our professionals


Larissa Arruy

Larissa Arruy


Larissa has a strong background in the financial and payment methods areas, having previously worked at important institutions within the industry. She is experienced in advising financial and payments institutions, fintechs, market infrastructure institutions and other participants in the sector on a wide variety of matters, including regulatory advice, lawsuits involving the Brazilian Central Bank and Brazilian Securities and Exchange Commission (CVM), structuring products and businesses, foreign investments in Brazil, matters involving foreign exchange, derivatives, regulatory compliance, and administrative proceedings. Larissa also works on corporate and capital market transactions involving regulated entities.


Bachelor of Laws – Universidade de São Paulo (USP);

Specialization in Business Administration – Fundação Getúlio Vargas (FGV).


Chambers FinTech – FinTech Legal (2021);

Latin Lawyer 250 – Capital Markets (2020);

The Legal 500 – Banking and Finance – Leading Individuals (2021);

Análise Advocacia– Regulatory (2020, 2023, 2024), Banks (2019, 2020, 2023, 2024) and São Paulo (2019 – 2020);

Análise advocacia Mulher- Regulatory (2021, 2024), Banks (2021, 2024) and São Paulo (2021, 2024);

IFLR 1000 – Banking: Highly regarded (2021 – 2023);

Global Banking Regulation Review – 45 under 45 (2020);

Who’s Who Legal Global – Banking: Regulatory (2021);

Who’s Who Legal Thought Leaders – GBRR (2021).

Único. The Mattos Filho news portal

Authored publications

Stay in touch

Get first-hand access to legal analysis from our specialists in different sectors through texts and podcasts. Stay on top of the main issues that impact your business.