Canaveris became a notary. He arrived at Buenos Aires around 1770, where he married Bernarda Esparza, the granddaughter of Miguel Jerónimo Esparza. At that time, Esparza was the alcalde, or governor, of Cabildo of Buenos Aires. Between 1777 and 1786, Canaveris worked as the portero of the court of auditors, In 1795, he was appointed as representative of the protector guardian of natural resources and Indians in the village of San Pablo de Capinota, Bolivia.