After a mixed start to his professional career, including a loss to Alex Pereira, Micheletti took part in the WGP Supekombat Heavyweight Tournament.
[10] Micheletti was booked to face the WKN and WAKO champion Vladimir Mineev at WGP Kickboxing: Russia X Brasil on May 17, 2014,[11] and lost a unanimous decision.
[12] Micheletti fought Wallyson Maguila for the Brasilian Professional Kickboxing Light Heavyweight title at WGP 22 on September 27, 2014.
[18] In his next fight, Micheletti fought for the WKN K-1 Super Cruiserweight title, facing Rogélio Ortiz at IVC International Vale Tudo championship on August 20, 2016.
In the quarterfinals, Micheletti beat Liu Junchao by technical knockout,[22] but lost to Roman Kryklia by unanimous decision in the semifinals.
[23] A month after his loss to Kryklia, Micheletti facedIgor Darmeshkin, for the vacant WAKO Pro World Low Kick Light Heavyweight title, at Battle of Champions 10 on March 16, 2018.
[29] Micheletti was scheduled to fight a rematch with Luis Tavares at Glory 78: Rotterdam, on a month's notice, as a replacement for Sergej Maslobojev.
[34] Micheletti faced the 2017 K-1 Heavyweight Grand Prix runner-up Ibrahim El Bouni at Glory: Collision 5 on June 17, 2023.