Nazareno started with Caribe Junior. He was noticed by Barcelona and was transferred there permanently. In the 2008 season, Nazareno was loaned out to Deportivo Quito. He played in the Copa Sudamericana 2008 and the Copa Pilsener 2008 with them. However, in mid-November, Nazareno had signed two contracts with Dep. Quito and Barcelona. He was then sent to go back to Barcelona and play for them. He scored his first goal with Barcelona in a 5-0 win against LDU de Portoviejo.