About Me

I'm a partner in our Dutch offices specialising in European and international regulatory projects in the communication and technology sectors. Today, I'm Chair of our Global Tech & Comms Group and head of our international Sector Regulation and Consulting practice.

I offer many years of in-depth legal and regulatory experience in leading cutting-edge European and multi-jurisdictional projects in the rapidly evolving national and international legislation in the communications and technology sectors. My experience is acknowledged by constant top tier listings in leading professional legal directories such as Chambers, Legal500 and Who's Who legal as well as the EMEA Technology Lawyer of the Year 2023 award by @Women in Business Law.

With the support of the international Bird & Bird team I am leading European and global projects for clients including the European Blockchain Sandbox for the European Commission and multi-jurisdictional projects for innovative international players in distributed ledger technologies, electronic communications and cyber security. These projects are based on long-standing client relationships and in-depth knowledge of technological developments and innovation.

I am a frequent conference speaker on international conferences and have written a range of published works on European and national legislation and regulation such as the European Electronic Communications Code, the Digital Services Act, the Digital Markets Act, the Data Act and the AI Act. I'm a member of the editorial board at Mediaforum, the Dutch legal magazine covering telecoms, media and communications.
  • Project leader for the European blockchain regulatory sandbox, an initiative of the European Commission covering all EU/EEA Member States (www.bockchain-sandbox.eu)
  • Leading multi-jurisdiction projects for major international players in relation to the European Electronic Communications Code (EECC) and Cyber Security legislation.
  • Strategic advice in relation to spectrum allocation and spectrum auctions.
  • Strategic advice in relation to the roll-out and deployment of high capacity broadband networks.


  • University of Utrecht, LL.M, Law


  • The Netherlands Bar in 1986
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'She goes way beyond just providing legal advice and offers high-value strategic advice.'

Chambers Europe, 2023

'Marjolein Geus has supported us in our international expansion efforts and global compliance. As always she is a pleasure to work with and shows great expertise and dedication.'

Legal 500 EMEA, 2023

Winner of the Technology Lawyer of the Year award

Women in Business Law Awards EMEA, 2023

Latest insights

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Tech & Comms Challenges, Opportunities & Predictions for 2024

Dec 20 2023

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NIS 2 Directive, CER Directive and DORA – Important EU cybersecurity-related legislative acts come into force

Jan 13 2023

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Tech & Comms Challenges, Opportunities & Predictions for 2023

Jan 05 2023

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News & Deals

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Applications are now open for the second cohort of the European Blockchain Sandbox

Jan 25 2024

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Bird & Bird retains top ranking in the 2020 Who's Who Legal's analysis of Data

Feb 10 2020

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Bird & Bird ranked as a leading firm for Technology, Communications and Media by Chambers Global 2016

Mar 24 2016

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