Sandes has also represented the senior Argentina national basketball team.

Sandes began his pro career spending five years with Boca Juniors in the Argentine League.

Sandes also played three seasons (2007–08, 2008–09, 2009–10) with Fuenlabrada of the Spanish Liga ACB.

He made his senior national team debut at the 2006 FIBA South American Championship, where he won a bronze medal.

With the senior Argentina national team, he also won a silver medal at the 2007 FIBA AmeriCup, and a bronze medal at the 2009 FIBA AmeriCup, where he averaged 3.6 points and 2.8 rebounds per game, in nine games of action.