On 24 May 2011, Cortese was signed by Gloucester Rugby for the 2011/12 season.[2] On 22 June 2012, following his release from Gloucester, he signed for French club US Colomiers in the Pro D2, the second level of domestic rugby union in France.[3]
Matias Cortese won his first cap with Argentina where he made his international debut in 2005, as a replacement, against Samoa in an international friendly losing at 12–28. His other two test match appearances came in the 2010 South American Championship with Cortese playing against Chile and Uruguay.[4] He was recalled to Argentina squad for the 2014 summer-test series held in June.[citation needed]