Upon graduating from the Eva Jaczova Dance Conservatory, Radačovský joined the Ballet Company of the Slovak National Theatre in 1989. Soon after, he became a principal dancer and depicted several main characters in classical and contemporary pieces including Romeo and Juliet, Carmen, Giselle, La Dame Aux Camelias and more. He received acclaim for his ability to combine brilliant dancing technique with a natural acting talent and a masculine expression. Radačovský took first prize at the Czechoslovak Ballet Competition in 1990. In 1992 he was invited to dance with Netherlands Dance Theatre Jiri Kilian’s in the Hague. During his seven years there he had the opportunity to work with world-known choreographers including Jiri Kilian, Nacho Duato and William Forsythe. Other influences on Radacovský’s artistic and personal growth were Gideon Obarzanek, Itzik Galili, James Kudelka, John Alaine, Christopher Weeldon, Stein Celis, Fernand Nault, Libor Vaculík and many others. In 1999 he became principal dancer with Les Grand Ballets Canadiens in Montreal. He was praised for his depiction of lead roles in Giselle, The Nutcracker, Swan Lake, The Field Mass, Concerto Barocco, Pique Dame and others.
Radačovský has been a regular participant of International Ballet Gala – ‘Gala des etolies‘ in Montreal, Gala Stars in Toronto, Gala Stars in Budapest and Gala Meeting in Prague. He has performed as a guest star with many significant dance companies including Royal Winnipeg Ballet, Ballet British Columbia, Toronto and Jacob’s Pillow. From 2003 to 2007 he taught at Festival of Art in Saint Sauveur. He returned to Slovak National Theatre in 2000 in the role of Albert in Giselle. In 2006 he became the Director of the Ballet of the Slovak National Theatre. He began choreographing in 2002. Radacovský’s debut was a piece called The Letter. His other works include: Passage à l‘eau trouble, Valse; Inspiration, Bolero, Shadows and Lightt, Balansoire, Meeting with a Swan and Soufflé des oiseaux. For Slovak National Theatre Ballet he created Change, Warhol and 68. In April 2009 he premiered two new pieces: A Dinner, presented by the Magyar Ballet Színház in Budapest, followed by a duet, Ulrich, for the National Theatre in Brno. At the end of the year Slovak National Ballet premiered his second feature ballet, Everest. Radacovský served as Artistic Director of the Ballet of the Slovak National Theatre until May 2010. In 2011 he premiered his Romeo and Juliet with Grand Rapids Ballet and has since toured the production throughout Europe with his own company, Ballet Bratislava. He returned to Grand Rapids to create an original version of Swan Lake, Black Swan/White Swan on the company in 2012. In 2009, Radačovský received an Award of the Literary Fund for his performance of Ivan the Terrible in the eponymous ballet by Libor Vaculík.