Born in 1953, Słowiński has a PhD in humanities and currently heads the Satchwell Warsaw movie studio. As a producer he has worked on numerous movies and TV shows, such as Quo Vadis (Jerzy Kawalerowicz), Kto nigdy nie żył… (Andrzej Seweryn), Syberiada polska as well as documentaries such as Wielka Pętla Wielkopolski, Ziemia warta odkrycia, Przyjechała nasza malarka znaczy jest już lato..., Przyjaciółki, Poznański stadion. Euro 2012. Oni muszą to zrobić.
Mirosław is also an author of six books: Błazen – dzieje postaci i motywu, Cztery uczty jeden świat, Dwa życia jak dwa psalmy. Historia mówiona Toshy i Leona Jedwab. He has been awarded by Polish Ministry of Science and Education as well as with the Przyjazny Brzeg award, for his multimedia event promoting Wielka Pętla Wielkopolski project.