Dominguez holds a major in Economics, and a minor in Business, Latin American Studies from the University of Kansas, in the United States.

Moreover, Mr. Dominguez completed his Master's in Business Administration (MBA) at Catholic University of Asunción - Paraguay (UCA), graduating with honors.

[5] Dominguez has a strong connection to football administration via his father Mr. Osvaldo Domínguez Dibb, a former president of a Paraguayan team, Club Olimpia.

[11] Dominguez succeeded his close friend, fellow Paraguayan Juan Ángel Napout, who was arrested in Switzerland in December 2015 and extradited to the US.

[11] Under Dominguez’s presidency, CONMEBOL, returned hundreds of millions of the stolen dollars,[12] significantly increased prize money on offer for CONMEBOL tournaments,[13] helped organize vaccines during COVID19,[14] obtained the anti-bribery management ISO 37001 Certification,[15] significantly expanded its female football offerings,[16] awarded the Contest of Good Practices of Transparency first prize by the Anti-Corruption Secretariat of Paraguay,[17] and improved relationships with UEFA via a strategic alliance.