ExpertisesProcurement law IT-Law Privacy law Litigation Cybersecurity
Part of teamTechnology, Media and Telecom Health Care & Life Sciences Transport and Logistics E-health E-commerce
Within Ploum, Dennis leads the IT and Privacy team. He has over 20 years of experience in the field of IT contracts and IT disputes. As a result, Dennis knows what a supplier or customer may expect and can quickly and pragmatically advise on the drafting, assessment, negotiation and termination of IT contracts and IT projects.
The sharing and/or enrichment of data plays an increasingly important role in many IT projects in which Dennis is involved, and therefore Dennis' extensive knowledge and experience in the field of privacy law.
An important part of his practice is assisting clients, both contracting authorities and tenderers, in IT projects that must be put out to tender under national or European procurement law.
Dennis also litigates on a regular basis. Both on conflicts regarding the execution or termination of IT contracts and the outcome of a tendering procedure.
Dennis is part of the editorial team of IT en Recht (www.itenrecht), the online platform for IT lawyers, and is responsible for the chapter on the Netherlands in the Chambers Global Practice Guide Public Procurement & Government Contracts. Dennis has also completed two post-graduate Grotius specialisation courses: IT Law (2002) and European and Dutch Procurement Law (2009).
‘Dennis Zieren gives you everything needed to be in an optimal position. A go-to person for data privacy and data protection-related matters. Fast, hands-on and client focused. Easy to work with.’ - Legal 500 EMEA 2023
Dennis (1970) graduated from Leiden University and has joined Ploum in 1999. Dennis has become a partner of Ploum in 2006. Before joining Ploum Dennis has worked as an in-house lawyer for the Royal Dutch Air Force and a major Dutch insurance company.
Starting from a broad commercial contracts and commercial litigation practice, Dennis has developed since 2000 an expertise in first IT & Privacy Law and later on Public and Utilities Procurement Law.
Dennis Zieren has registered the following principal (and secondary) legal practice areas in the Netherlands Bar’s register of legal practice areas (rechtsgebiedenregister):
Based on this registration, Dennis Zieren is required to obtain ten training credits per calendar year in each registered principal legal practice area in accordance with the standards set by the Netherlands Bar.
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