Filjak was awarded the 2007 Concorso Busoni's 5th prize, and subsequently won the 2007 Viotti and 2008 Maria Canals competitions.
As a recitalist as well as concerto soloist, Ms. Filjak has performed in such major venues as the Concertgebouw in Amsterdam, Konzerthaus Berlin, L'Auditori and Palau de la Música Catalana in Barcelona, Carnegie Hall in New York City, Palais de la musique et des congrès in Strasbourg, Musikverein in Vienna, Shanghai Oriental Art Center and the Severance Hall in Cleveland.
[1] In October 2009 she was additionally awarded an Honorary Medal by the President of the Republic of Croatia for her artistic achievements.
[citation needed] In 2010 and 2011 she performed with the Deutsche Radio Philharmonie and Christoph Poppen, at the Al Bustan Festival in Lebanon, the Granada Symphony Orchestra and the Hong Kong Sinfonietta and as a recitalist at the Munich Residenz and at the Palau de la Musica in Barcelona.
[citation needed] Miss Filjak holds dual Croatian and Italian nationality and speaks 7 languages.