Partner, as well as partner and co-founder of the Martini i Wspólnicy Tax Firm with over two decades of experience in the field of VAT;

Eight-time winner of the Best Tax Advisor in Poland/Leader in the VAT category (Rzeczpospolita Ranking), Band I in the Chambers & Partners ranking;

Chairman of the VAT Group of the Tax Council of PKPP Lewiatan;

The most experienced representative in Poland in proceedings before the Court of Justice of the EU in Luxembourg (including C313/05 Brzeziński, C-414/07 Magoora, C-318/11 Oasis East).