Attorney at law, tax advisor, member of the Warsaw Bar Association and Polish Chamber of Tax Advisors. He graduated from the University of Warsaw (MA, 2012) and the Institute of Law Studies of Polish Academy of Sciences (PhD, 2021). He specializes in providing tax advisory services in a field of personal taxation (personal income tax, inheritance tax, gift tax, tax on civil transactions) with particular emphasis on the taxation of cross-border income. He has 11-years of experience gained in Poland, Switzerland and the Netherlands.

In 2023, he defended his doctoral dissertation (Consequences of the lack of recognition of same-sex relationships in the Polish legal system) and obtained a doctoral degree (law).

He was collaborating with Lambda Warszawa for 3 years where he was providing pro-bono legal and tax services for the clients of Lambda.

Mateusz speaks Polish, English and Spanish.

Author or co-author of the following publications:

Hate Crime in Poland 2012-2016

Nieuznawanie w Polsce zawartych za granicą związków jednopłciowych – aspekty prawne z perspektywy swobody przepływu osób

The Other Side of Tax Discrimination. Lack of Legal Recognition for Same-Sex Couples and Its Fiscal Consequences

Wyrok Wielkiej Izby w sprawie Fedotova i inni przeciwko Rosji a podwyższony standard ochrony dla związków osób tej samej płci

Participant and speaker at international conferences (Lubljana, Rome, Almeria) on private international law (securing cross-border family interests) under the project of Personalized Solution in European Family and Succession Law (euro-family.eu) and E-Training on EU Family Property Regimes (Brussels).