Kaziyski with Bulgaria team won the bronze medal in the 2006 World Championship, ranking fifth among the most productive scorers in the championship and receiving the best server award. In 2012 Kaziyski left the Bulgaria men's national volleyball team, together with coach Radostin Stoytchev, due to a scandal with Bulgarian Volleyball Federation (BFV). The player said he would not get back, until the leadership and structure of the BFV is changed.