Born in Zugdidi, Georgia, and started learning Ashihara karate at age of nine in the Ashihara International Karate Organization, Kiria later relocated to the Netherlands to train under AIKO founder Dave Jonkers at the Golden Glory gym in Zuidlaren, where he is a training partner of legendary heavyweight Sem Schilt. He began kickboxing at fifteen years old after a career in full contact karate in which he won the 2009 Kyokushinkai Karate Kamakura European Championship of the International Budo Kai organization. In 2008, he reached the final of the Ring Masters Olympia 2008 Welterweight Tournament in Istanbul, Turkey but lost to the great Somrak Kamsing by decision after three rounds. Following this, Kiria moved up to middleweight and continued to gain experience by fighting his way through the Dutch kickboxing scene. On April 17, 2010, he competed in the Superfighters 8 Man Tournament in Frankfurt, Germany. Despite losing to Marco Piqué by an extension round decision in the quarter-finals, he was still given a slot in the semis by replacing Shemsi Beqiri who coundn't continue due to a broken nose. He was then eliminated from the competition by losing a decision to Chris van Venpoep. After tough losses against some of the sport's most experienced fighters, Kiria finally got the break-out win of his career when he defeated the K-1 and It's Showtime veteran William Diender by decision after five rounds in Assen, Netherlands. He was then pitted against the up-and-coming Robin van Roosmalen at ' in Charleroi, Belgium on March 19, 2011, losing via unanimous decision in a "Fight of the Night" display. Kiria then moved up to the 74 kg/163 lb weight class from his usual 70 kg/154 lb to take on one of the world's top fighters in Nieky Holzken at United Glory 15 in Moscow, Russia on March 23, 2012. He lost by unanimous decision. Despite having gone 0-2 in the Glory promotion, he was included in the 2012 Middleweight Slam tournament, replacing Cosmo Alexandre to join sixteen of the world's best fighters at 70 kg/154 lb. The tournament kicked off in Stockholm, Sweden at ' on May 26, 2012 and Kiria caused a major upset by taking a unanimous decision win over Muay Thai stylist Kem Sitsongpeenong. Kem seemed uncomfortable without the use of elbows and clinching and was outboxed throughout the duration of the match. Kiria also floored the Thai star with a mawashi geri in the opening round to ensure the points victory. Advancing to the tournament final eight at ' in Rome, Italy on November 3, 2012, Kiria was drawn against Shemsi Beqiri at the quarter-finals. After an action-packed three rounds, Kiria was given the nod via split decision and headed into the semis to face eventual tournament winner Giorgio Petrosyan, who was simply too good for him and won by a unanimous points verdict. Despite coming back from the Glory tournament empty-handed, Kiria proved himself to be amongst the middleweight elite, and moved into the top ten in the world rankings in December 2012, coming in at #7. He showcased exceptionable boxing skills and an impenetrable defence en route to a unanimous decision victory over Yuri Bessmertny at ' in Milan, Italy on April 20, 2013. Kiria took a unanimous decision over Murthel Groenhart at ' in Ontario, California, United States on September 28, 2013. He rematched Robin van Roosmalen in the semi-finals of the ' in New York City, New York, US on November 23, 2013, losing a unanimous decision. Replacing Ky Hollenbeck who withdrew from the fight, Kiria faced Andy Ristie for the inaugural Glory Lightweight Championship at in Zagreb, Croatia on March 8, 2014. He trailed to his Surinamese opponent for the first three rounds and was knocked down with a step knee in the second, but mounted a late comeback in the championship rounds and finished Ristie in the fifth to take the belt.
