The cousin of team star Zaza Pachulia, Burjanadze has built his own positive professional reputation in Spain, having honed his game in the highly-rated player development programme of Cajasol Sevilla. His potential was recognised early on, and after appearing in the U16 European Championship (Division B) in 2009, aged just 14, he went on to compete in five other European youth competitions. He played a bit-part role in Georgia's EuroBasket 2013 campaign before combining U20 duties with those of the senior national team in the summer of 2014. He averaged 21.6 points and 9.5 rebounds per game as Georgia finished 10th in U20 European Championship Division B, but was then part of the senior team's successful EuroBasket 2015 2nd Qualification Round push, adding 6.2 points and 3.3 rebounds per game. He spent the 2014-15 season with Leyma Basquet Coruña in Spain's LEB Gold, scoring 12.7 points per game.