People Poland Maciej Sieńczyk peoplepill id: maciej-sienczykMS 4 views today 5 views this weekMaciej SieńczykBiographyListsAlso ViewedListsMaciej Sieńczyk is in following listsBy work and/or countryNotable Polish peopleGender:Male, Born in:Years 1970 to 1999From our partnersSponsoredMaciej Sieńczyk