Capitalising on his excellent knowledge of oriental languages, Preziosi worked as a translator for the British and Greek Embassies, and it was in this capacity that he seems to have made his first contact with Romanian officials.
Koristeći odlično poznavanje orijentalnih jezika, Preziosi je radio kao prevodilac za britansko i grčko veleposlanstvo, i u tom svojstvu je po svemu sudeći i ostvario prvi kontakt s rumunjskim zvaničnicima.