Career
Viera played in his youth career for Libertad, before moving to Rubio ÑUniversity He made his professional debut for the club in 2012 and remained there until 2014. In August 2014, he transferred to in Brazil.
Despite already being a professional player, Viera was relocated to " youth team
He was called by Paraguay national under-20 football team to play in the 2015 South American Youth Football Championship.