Antoni Kostrzewa

Available to hire

I come from an artistic family—my grandfather, parents, and older brother are musicians and faculty at the Fryderyk Chopin University of Music.

About

I come from an artistic family—my grandfather, parents, and older brother are musicians and faculty at the Fryderyk Chopin University of Music. From a young age I actively participated in the artistic and cultural life of my city and the places I found myself in. I graduated from a primary music school in the clarinet class.

I am driven by building immersive sound worlds through music production, composition, and sound design, drawing on a deep heritage and hands-on work in recording and studio production. I thrive on collaborating with artists and filmmakers to craft engaging audio experiences across film, advertising, and live events.

  • 10 years' experience
  • Joined May 2024

Industry experience

  • Media & Entertainment
  • Education
  • Software & Internet
  • Professional Services
  • Other

Work experience· 5 roles

Music Producer · Independent / Self-employedJan 2024 – Present · 2 yrs 11 mos

Responsible for recording, editing, and mastering audio book content to ensure high-quality audio production. Collaborate with narrators and voice actors to achieve optimal performance and sound clarity. Manage the technical aspects of audio equipment and software to produce professional and engaging audio books.

Festival Production Coordinator · Crazy Music Days Festival / Grand Theatre – National Opera in Warsaw / Sinfonia Varsovia festivalJan 2021 – Present · 5 yrs 11 mos

Organized concerts, managed audience services, and supported artist needs during major festival events. Collaborated with the concert office of the Fryderyk Chopin University of Music to ensure seamless event execution and cross-institution coordination.

Music Producer / Audio Engineer · Self-employed / FreelanceJan 2016 – Present · 10 yrs 11 mos

Organized concerts and produced immersive audio projects for a range of clients and events. Oversaw audio services for the Crazy Music Days Festival at the Grand Theatre – National Opera in Warsaw and for the Sinfonia Varsovia festival, coordinating with the Fryderyk Chopin University of Music to ensure seamless event execution. Developed projects for films, advertising, and artistic ventures, including collaborations with Netflix (Infamy), Samsung, Kross, Triumph, and Puma. Supervised recording sessions and managed post-production processes for diverse audio productions. Built and maintained a library of high-quality sound assets; responsible for recording, editing, and mastering audiobook content to ensure professional sound. Collaborated with narrators and voice actors to achieve optimal performance and clarity. Managed technical aspects of audio equipment and software, delivering polished, engaging audio books and other multimedia content.

Audio Technician · Sinfonia Varsovia / Dyspensa RecordsJan 2016 – Present · 10 yrs 11 mos
Recording Engineer · Dyspensa RecordsJan 2016 – Present · 10 yrs 11 mos

Education

Basic Level · State Music School Complex2030 – 2025
Primary music school, clarinet class · Primary Music School2030 – 2025
Primary Music School - Clarinet · Primary Music School2030 – 2026
Sound Direction / Production Training · Bronisława Geremka Academy of Journalism and Sound Production2030 – 2026

Certifications and awards

Driving license (category B)2030 – 2025

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