Chairperson Quiroz is a former Associate Justice appointed in 2022 as the Chairperson of the Governance Commission for GOCCs (GCG).

Chairperson Quiroz is an accomplished member of the judiciary and public servant for a total of 37 years, 30 of which have been spent in the judiciary. His public stint outside of the judiciary are his public service in the Office of the City Fiscal of Manila as a Special Counsel in 1985, in the House of Representatives in 1987, and in the Office of the Solicitor General in 1988.

In 1992, Chairperson Quiroz was appointed as a judge for the Metropolitan Trial Court and the Regional Trial Court in 2001. During his time in the judiciary, he received recognition as the 2004 Most Outstanding Regional Trial Court Judge during the 6th Anniversary of the Crusade Against Crime and Violence. In 2008, he was appointed as an Associate Justice of the Sandiganbayan.