Sergio Queiroga is a Social Security and Tax lawyer. He is also a Social Security Law professor at the School of Magistracy of the State of Rio de Janeiro (EMERJ). He held, in the Brazilian Government, the positions of Social Security Auditor and Internal Revenue Service Auditor (retired since August 2019).

In addition to the legal expertise, Sergio is an Electrical Engineer, with a postgraduate degree in Quality Engineering.

Co-author of the book Social Security Law – Commented Objective Questions