瓦里翁自 1984 年於李斯特音樂學院開始學習鋼琴，他的鋼琴教授為法萊，而室內樂教授為庫塔克，而他於 1991 年從該校獲得學位畢業。在匈牙利，瓦里翁時常與席夫合作舉行大師班。瓦里翁於匈牙利廣播電台鋼琴大賽、在布達佩斯特的維納國際室內樂大賽、在蘇黎士的安達國際鋼琴大賽中皆獲得首獎。瓦里翁頻繁地在國際著名的音樂節上演出，包括薩爾茲堡音樂節、琉森音樂節、石勒蘇益格－荷爾斯泰因音樂節、威尼斯音樂節、馬可波羅音樂節、魯爾音樂節、威爾藝術節、愛丁堡音樂節。至於瓦里翁也與國際著名的樂團合作，包括薩爾茲堡室內樂團（Camerata Salzburg）、聖馬丁學會管弦樂團、維也納室內樂管弦樂團、布達佩斯特李斯特室內管弦樂團、伯恩室內樂團、洛桑室內樂團、匈牙利國立交響樂團、蘇黎士市政廳管弦樂團、雅典市立管弦樂團、布萊梅愛樂、美國交響樂團、圖魯士國立管弦樂團、布達佩斯特節慶管弦樂團、波羅的海室內樂團。

瓦里翁的室內樂演出也很頻繁，時常與以下的器樂家合作演出：大提琴家伊瑟利斯、小提琴家哈根（Veronika Hagen）、小提琴家卡瓦科斯、鋼琴家席夫、中提琴家齊瑪曼（Tabea Zimmermann）、塔卡契四重奏、卡蜜拉四重奏、凱勒四重奏等等，瓦里翁尤其與德國作曲家魏德曼（Jörg Widmann）的合作相當密切。

瓦里翁在 Naxos、Capriccio、Hungaroton Classics 等唱片公司錄音，皆獲得相當優異的評價，他現在是布達佩斯特李斯特音樂院的鋼琴教授，也多次獲得匈牙利政府的獎勵，以表彰他在文化藝術方面的貢獻。

Dénes Várjon started studying at the Liszt Ferenc Academy of Music in 1984. He received piano training from Sándor Falvai, and chamber music instruction from György Kurtág and Ferenc Rados. Parallel to his studies, he regularly participated in international master classes with András Schiff. Mr. Várjon is the first-prize winner of the Hungarian Radio Piano Competition, Leo Weiner Chamber Music Competition in Budapest, and Concours Géza Anda in Zurich.

Mr. Várjon is a regular guest at prestigious international festivals, including the Salzburger Festspiele, Lucerne Festival, Schleswig-Holstein Musik Festival, Biennale di Venezia, Marlboro Music Festival, Klavier-Festival Ruhr, Kunstfest Weimar, and Edinburgh Festival. He has performed with major orchestras such as Camerata Salzburg, Academy of St. Martin in the Fields, Vienna KammerOrchester, Franz Liszt Chamber Orchestra, Tonhalle-Orchestra Zurich, Berlin Radio Symphony Orchestra, Orchestre Philharmonique de Strasbourg, Scottish Chamber Orchestra, Chamber Orchestra of Europe, Bremen Philharmonic, American Symphony Orchestra, and Budapest Festival Orchestra.

Mr. Várjon is deeply committed to chamber music and collaborates with Lukas Hagen, Clemens Hagen, and Veronika Hagen; Steven Isserlis; Leonidas Kavakos; Miklós Perényi; Carolin Widmann; Christoph Richter; Joshua Bell; Radovan Vlatković; Tabea Zimmermann; and the Carmina, Takács, Keller, and Endellion quartets. He also appears regularly with his wife Izabella Simon in duo piano recitals together. Mr. Várjon regularly collaborates with German composer Jörg Widmann, and with oboist and composer Heinz Holliger.

He has recorded for the Naxos, Capriccio, and Hungaroton Classics record labels to critical acclaim. Teldec released his CD with Sándor Veress's Hommage à Paul Klee, a production with András Schiff, Heinz Holliger, and the Budapest Festival Orchestra. His recording Hommage à Geza Anda on Pan Classics International has received important international critical acclaim. In 2008, he released a CD of Schumann violin and piano sonatas that he recorded with Carolin Widmann; in the same year, he recorded Holliger's Romancendres with Christoph Richter for ECM. His latest recording with cellist Steven Isserlis of Schumann pieces was issued in 2009 on the Hyperion label. His first solo CD, featuring pieces by Berg, Janáček, and Liszt, was recently by ECM.