Carini played for the Uruguay national football team, which he represented at the 1999 and 2007 editions of the Copa América – earning second and fourth–place finishes respectively – as well as the 2002 FIFA World Cup, where his nation suffered a first–round elimination. Carini made his debut for the national squad on 17 June 1999 in a friendly match (2–3 win) in Ciudad del Este against Paraguay. In total he obtained 74 caps between 1999 and 2009.