Chambers and Partners recognizes Guilherme as one of the leading lawyers in the areas of Project Financing and Banking. With a highly esteemed practice, he is endorsed by his peers and clients: "Guilherme is very skilled in credit operations with banks, particularly in project financing operations."

Guilherme has also been recognized by Chambers Global among the top professionals in Banking and Finance, and Projects. The publication The Legal 500 also lists Guilherme as a leading lawyer in the area of Project Financing and Infrastructure and recommends him in the areas of Banking, Bankruptcy and Restructuring, and Hydrocarbons.

Guilherme has been recognized by the publication International Financial Law Review (IFLR 1000) as a "highly regarded" lawyer in the areas of Banking, Project Financing, Mergers and Acquisitions, and Project Development.

LACCA Approved recommends Guilherme among the most voted by legal departments of companies in Latin America, recognizing him as one of the best lawyers in Banking and Finance. He is also recommended as a leading professional in the area of Project Financing by Who's Who Legal in the Brazil category and Thought Leaders.

Guilherme is listed as one of the most admired lawyers in Brazil by the publication Análise Advocacia.