Career
Sarmiento has spent most of his career in Argentina with Talleres de Córdoba, Olimpo and Argentinos Juniors. He had a brief spell on loan to Bulgarian team Litex Lovech and he spent the early part of the 2006-2007 season on loan at English side Southampton. Sarmiento re-joined his previous club Argentinos Juniors on loan until June 2007 before joining Larissa in Greece on a free transfer on a two-year contract plus one year extension option.
Foreign the next two seasons, Sarmiento was a fundamental part of Larissa squad, playing more than 60 games in total with the maroons, and being one of the key players in midfield.
In summer 2009, he transferred to Atromitos, rejoining his old Larissa coach Giorgos Donis.
