Since Oct 2020 I serve in the Editorial Committee of the journal Dissertationes Mathematicae. We publish long self-contained research papers in any area of mathematics. It is a journal produced and sold by IMPAN, so whatever small profit it generates it all supports the mathematical community. Historically, it was established by Karol Borsuk in 1952 as Rozprawy Matematyczne. In case numerical indicators are important to you, the Impact Factor of Dissertationes Math. oscilates around 1, while it has 100 points in the Polish Ministry evaluation (2021), but I will not update these figures regularly here.
Since May 2021 I am a member of the committee for suggesting changes in the recruitment regulations at IMPAN.
Since Oct 2020 I am the head of the Department of Algebra and Algebraic Geometry at IMPAN.
Since Nov 2017 I am a member of Small Research Meetings Commission at IMPAN.
Since Oct 2016 I am a member of the Library Committee at MIMUW.
Since Apr 2016 I am a member of Equal Treatment Committee at IMPAN.
From Jan 2020 till Nov 2022 I was a member of Employement Committee at IMPAN.