He led the Diocese of Santiago del Estero as bishop from 2013 to 2024 and then became its first archbishop when it was raised to the rank of archdiocese on 22 July 2024 and he was also given the title "Primate of Argentina".

He was an auxiliary bishop of Buenos Aires from 2010 to 2013 while his archbishop there was Cardinal Jorge Bergoglio, the future Pope Francis.

He studied philosophy at the Jesuit Maximo College in San Miguel and theology at the Seminary of Buenos Aires.

[1] He was responsible for the vocational and youth ministry of the Buenos Aires archdiocese and also parish vicar of Nuestra Señora de la Medalla Milagrosa for the next two years.

On 22 July 2024, Pope Francis elevated the diocese of Santiago del Estero to the rank of archdiocese and named Iglic its first archbishop, while also giving him the title "Primate of Argentina".