Slava was born in Moscow. Soon after his birth, his parents moved to Sofia, Bulgaria, where Slava grew up and developed his dancing skills. He started dancing at eight years old and for many years he represented Bulgaria at ballroom dance competitions domestically and abroad, with great success. He turned professional in 2005, and was soon ranked 16th in the European Professional Standard Championships, and 18th in the World Professional Standard Championships. After many years of competing successfully in the International Standard division, Slava decided to compete professionally in American Style Smooth. With his wife, Jessica McMorrow Stefanov, Slava placed in the World Open Professional Smooth Semifinal and the US National Professional Rising Star Smooth Final. Currently, Slava lives and teaches in Redmond, WA, where he is the Co-Founder and Dance Director of Briora Ballroom Dance Studio.