Marzena Diakun rapidly gained international acclaim after substituting Mikko Franck for several concerts with Orchestre Philharmonique de Radio France during her assistantship in Paris in the 2015/16 season. Some of these concerts were broadcasted by France Musique and

She approved her international level receiving second prize at the prestigious 59th Prague Spring Competition for Conductors in Czech Republic and second prize at the 9th Fitelberg International Competition for Conductors in Poland (2012). She was finalist of the 4th International Lutoslawski Conducting Competition (2006) and semifinalist of both Donatella Flick Conductors Competition in London and Quadaques Competition in Barcelona (2008).

Born in Poland, she finished with distinction conducting class under Mieczysław Gawronski at the Karol Lipinski Academy of Music in Wroclaw. She completed postgraduate studies at the University of Music and Performing Arts Vienna in Uros Lajovic’s class. She received the highest distinction award from the Polish Minister of Art in 2005.

Diakun made her professional debut leading the 17th International Percussion Music Days Symphony Gala in Koszalin. She has participated in Polish masterclasses led by Jerzy Salwarowski (1999), Marek Tracz (2001), Gabriel Chmura (2003). Internationally, she has studied under Howard Griffiths and Colin Metters in Zurich (2003), Kurt Masur in Wroclaw (2004) and Pierre Boulez at the Luzern Festival (2011).

Her previous appointments include Jerzy Maksymiuk’s assistant in Koszalin Philharmonic Orchestra, Andrey Boreyko’s assistant in Berner Symphony Orchestra and Richard Rosenberg’s assistant during National Music Festival (USA), conducting several concerts with the Festival Symphony Orchestra. In summer 2015, Diakun was a recipient of Boston Symphony Orchestra Conducting Fellowship at Tanglewood Music Festival.

Recent engagements include Orchestre Philharmonique de Radio France, Prague Radio Symphony Orchestra, Polish National Radio Symphony Orchestra in Katowice, National Warsaw Philharmonic, Orquesta Sinfonica del Principado de Asturias, Liverpool Philharmonic, Bournemouth Symphony Orchestra, Orchestre Philharmonique de Busan, Orchestre National de Lyon, Orquestra Sinfónica do Estado de São Paulo, Krakow Philharmonic Orchestra, Baltic Philharmonic Orchestra, Katowice Philharmonic Orchestra, Connecticut Chamber Virtuosi (USA), Jeaner Philharmoniker (Germany) and Berg Orchestra (Prague), National Radio Symphony Orchestra in Lubljana, Presidential Symphony Orchestra in Ankara or Istanbul Symphony Orchestra.

Since 2009, her collaboration with Spanish contemporary orchestra, "Smash Ensemble" has brought several premieres of Spanish composers in Portugal, Spain, Germany and Lithuania.

In 2010 Diakun completed her Doctor of Musical Arts degree at the Krakow Academy of Music. She currently is a conducting professor at the Karol Lipinski Academy of Music in Wroclaw leading her own conducting class since 2013.

In 2015 lasting until 2017 she won the Marin Alsop's Taki Concordia Fellowship.

Diakun received „Kreatywni Wrocławia” award and she was nominated to the „Wrocław Music Award” in 2015. She was „The Artist of the Year” in 2013 and obtained „Koszalin Eagle” - President of Koszalin award. She received "Polityka Passport" - the prize for the best artist in the classical music for 2016.