As Serhiy was six years old his father took him to Dynamo football Academy.
Still several years later he had to change the club. As Miakushko was 14 he was spotted by FC Obolon Kyiv coaches.
In 2010/11 season Serhiy made 17 appearances for Obolon reserve team. The following year he made his debut in Ukrainian Premier League (7 appearances).
In 2012 Miakushko was offered to return to Dynamo. Serhiy started playing for the White-Blues reserve team and Dynamo U-19.
Miakushko has maximal aims the main of which is to play for Dynamo main squad.