Shiraev's first international appearance took place in Subotica, where he competed at the 2015 Cadet European Championships in the 42 kilograms division. He placed fifteenth at the tournament and took a long break that lasted until late 2018. Despite being eligible to compete at the junior level, he made his return at the '18 Intercontinental Cup as a senior. He earned a bronze medal and so he did at the 2019's Ali Aliev Tournament and Ugra Cup, also adding a silver medal from the '19 Junior World Championships and the '18 and 19's Alans Tournament. All of his senior level losses from 2018–2019 came from prestigious wrestlers, such as Soslan Ramonov ('16 Olympic Gold Medalist), Aleksandr Bogomoev ('15 European Games champion), Bajrang Punia ('18 Asian Games champion) and Ismail Musukaev ('15 Russian National runner-up).