Doctor of musical arts, independent cellist, improviser and composer specialising in the performance of contemporary and  avant-garde music. He studied at the Chopin University of Music  in Warsaw. He is a prizewinner at music competitions, including  the Krzysztof Penderecki Contemporary Chamber Music Competition in Cracow (2001, 2002) and Witold Lutosławski International Cello Competition in Warsaw (1997). He has performed  at festivals including Warsaw Autumn, Musica Polonica Nova,  1st Paweł Szymański Festival, Ad Libitum, and Audio Art, as well  as in the concert series Composer Portraits, contem.ucha in Łódź,  AudioLogie in Lublin, and Playback Play.

From 1998 to 2008 he was a member of the cello ensemble Conjunto Ibérico, based in the Netherlands, with which he toured  European countries, Brazil, Mexico, and the United States. He  is a permanent member of Andrzej Bauer’s Cellonet Group  in Warsaw, and cooperates with the Kwartludium ensemble.  His solo album Cellovator, featuring contemporary compositions and improvisations, was released in 2008. A recording by  Mikołaj Pałosz also appeared on the album Exploratory Music  from Poland, presenting the most interesting phenomena in Polish music, as described in The Wire magazine (2010). Together  with saxophonist Ray Dickaty and percussionist Paweł Szpura,  he forms the improvising trio Osaka Vacuum, which released  the album Emerging View on Slowdown Records in 2011.

Under creative scholarships from the City of Warsaw and  the Minister of Culture and National Heritage, he created a collection of etudes for solo cello, Preludes (2012), and the audiovisual compositions Dłubak Soundsystem (2012) and AVC (2016).  He initiates the creation of new works and has premiered numerous pieces, including works dedicated to him.

With violinist Anna Kwiatkowska he forms a duo dedicated to  contemporary repertoire. They have performed at leading contemporary music festivals in Poland. Their album AURE, featuring solo works and duos, was released in 2021. They also perform  together in larger ensembles in the New Music Scene concert  series at the Nowy Theatre in Warsaw, presenting the most  important achievements of the twentieth-century classical repertoire alongside the latest trends in contemporary music.

Pałosz is President of the Foundation for the Promotion of Young  Cellists, active since 1996, organiser of the Witold Lutosławski  International Cello Competition in Warsaw. He is a board member and secretary of the Witold Lutosławski Society, based in  Warsaw. Since 2016 he has cooperated with the Roma Musical  Theatre in Warsaw.