Juarez started his professional career in 2006. He fought mainly for California-based promotions as Strikeforce, Gladiator Challenge and Invincible. He faced Luke Stewart on September 20, 2008 at. He lost via submission due to an armbar in the first round.
Bellator MMA
Juarez made his promotional debut against Mikey Gomez on April 10, 2009 at Bellator 2. He won via TKO in the first round. Juarez next faced Deray Davis on May 15, 2009 at Bellator 7–8. Once again he won via TKO in round one. Juarez did a rematch against Mikey Gomez on June 5, 2009 at Bellator 10. He won via unanimous decision.
Juarez made his promotional debut in MFC against Joe Christopher on December 4, 2009 at MFC 23. He won via unanimous decision. Juarez faced Nathan Gunn on February 26, 2010 at MFC 24. He won via knockout with a head kick at 11 seconds of round one. Juarez made his promotional debut in Cage Fighting Championship against Justin Murray on April 16, 2010 at CFC 13 for the welterweight title. Juarez defeated Murray via majority decision after five rounds and became the CFC welterweight title holder. Juarez faced Douglas Lima on November 12, 2010 at MFC 27 for the MFC Welterweight Championship. He lost via submission due to a triangle armbar in the third round. Juarez defended his CFC Welterweight Championship against Manuel Rodriguez on August 26, 2011 at CFC 18. He defeated Rodriguez via unanimous decision after five rounds to retain his belt. Juarez defended the CFC Championship against Robert Whittaker on May 18, 2012 at CFC 21. He defeated Whittaker via unanimous decision after five rounds to retain the title.
Return to Bellator MMA
In 2013, Juarez returned to Bellator MMA. He faced Jordan Smith on February 21, 2013 at Bellator 90. He won via split decision after a hard-fought match. Juarez faced Joe Williams on November 2, 2013 at Bellator 106. He won via submission due to a guillotine choke in the very first round. Juarez was scheduled to face Andrey Koreshkov in the quarterfinal match of on March 14, 2014 at Bellator 112. However, after the removal of other tournament competitors citing injuries, the tournament line-up was shifted and Juarez instead faced Adam McDonough. He lost the fight via unanimous decision. Juarez faced Ron Keslar on September 19, 2014 at Bellator 125. He won the fight via unanimous decision. Juarez was expected to face Brennan Ward at Bellator 134 on February 27, 2015. However, Ward was moved up to the main card to face Curtis Millender after Millender's opponent, Michael Page, pulled out of the fight due to a cut over his left eye. Juarez was removed from the fight card as a result. Juarez faced Ricky Rainey at Bellator 137 on May 15, 2015. He lost the fight via knockout in the second round. In June 2015, it was revealed that Juarez and 7 other fighters were released from the promotion.
Absolute Championship Berkut
Juarez faced Beslan Isaev on May 6, 2016 at ACB 35. He lost the fight via submission in the first round.