|Full name||José Arnulfo Montiel Núñez|
|Date of birth||19 March 1988|
|Place of birth||Asunción, Paraguay|
|Height||1.73m (5ft 8½in)|
|Playing position||Attacking Midfielder, Forward|
|2008–2009||→ Politehnica Iaşi (loan)||18||(2)|
|2009–2010||→ Tigre (loan)||10||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 27 December 2014.
‡ National team caps and goals correct as of 13 June 2010
At a very young age, Montiel started his career in his hometown team Olimpia de Itá, which is a division of Olimpia Asunción in Itauguá city's football league. Scouts from Olimpia Asunción noticed his talent and signed him to the youth divisions of the Asunción club. Montiel was a key part of the Paraguayan national under-15 team that won the U-15 South American Championship in 2004.
His professional debut came playing for Olimpia late in 2004, at the age of 16. Montiel's excellent vision and skills secured him a place in the first team. In 2005, he eventually made the Paraguay national football team squad at the age of 17.
After the 2006 World Cup, Montiel joined Udinese Calcio. However, following just one season with the club, he was sold to Reggina. In the 2008–2009 season, he was loaned to the Romanian Liga I team Politenica Iaşi, helping them to avoid relegation.
For the 2009–2010 season, Montiel was loaned to the Argentine club Tigre, making his debut on the 2nd day of Apertura 2009 tournament. He substituted Lucas Oviedo in the game against Rosario Central. He reenters in Italy in March 2010. In the season 2010/2011 he is bought to definitive title by the Reggina.
Following a period at Benevento between 2012 and 2014. Montiel returned to Olimpia for the 2014 Clausura where he played 14 games before moving to the Copa Libertadores finalist Nacional Asunción in 2015.
In 2016, he has signed a one year deal with the Peruvian side Unión Comercio.