Sornoza played and scored in Independiente's first ever participation of Copa Libertadores on February 18, against Union Espanola, drawing 2–2 at home.

On March 12, in a Copa Libertadores group match, Sornoza scored a fantastic long range goal in injury time against Botafogo to give Independiente their first ever competition win.

On April 9, Júnior Sornoza guided Independiente del Valle to a 5-4 victory against Chilean club Union Espanola.

On January 13, 2015, it was confirmed that Sornoza would be joining Liga MX side Pachuca on a one year loan deal.

[5][1] On January 8, 2019, it was confirmed that Sornoza joined two-time FIFA Club World Cup champions Corinthians.