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Marian Giersz

Counsel, Warsaw

Marian Giersz is an expert on privacy protection, telecommunication law and new technologies including AI.
	Giersz Marian


Marian has extensive experience in supporting clients in data protection, telecommunications and implementation of technology. He combines unique legal expertise with an excellent understanding of the new technologies, including AI. 

He helps international companies (including fin-techs, global banks and telecom operators) to deploy technologies that enhance data monetisation, improve the user experience and create competitive advantage for the client.

Marian also designs and develops Legal-Tech solutions that support clients in the privacy protection management and paperless projects.

Marian is an expert in implementing group privacy standards for multinational companies (incl. banks). He advises clients in the area of digital advertising incl. behavioural advertising and user tracking. Marian also helps clients in the deployment of solutions that use biometric data, device prints, voice prints or virtual identity.


  • Advocate – The Warsaw Bar Association


  • The Legal 500 EMEA 2023 - Data Privacy and Data Protection – Recommended Lawyer