Bertin represented Haiti at the 2007 CONCACAF Gold Cup in the United States, and made his debut in the nation's final group stage game, a 0–2 loss against Canada. In February 2008 he played in a friendly with Venezuela, serving as warm-up for the 2010 FIFA World Cup qualifiers against the Netherlands Antilles, which ended with a 1–0 aggregate win – he appeared in the second leg, a 1–0 success in Willemstad – with Haiti thus progressing to the third round.