Koen Tamsyn
Business Unit Lead Cybersecurity & Networking at NTT DATA, Inc. | Mechelen, Flemish Region, Belgium
Koen Tamsyn’s Email & Phone Number
VerifiedFree account · No credit card · 5 profiles/month
ContactOut Insights • AI Generated
Koen Tamsyn leads the Cybersecurity and Networking business unit at NTT DATA, where he directs technology strategy and consulting services within the Belgian information technology sector. He holds the Certified Information Systems Security Professional (CISSP) credential and built his technical foundation through studies at Karel de Grote-Hogeschool. Operating from Mechelen, he guides enterprise clients through digital transformation and network security implementation aligned with NTT DATA’s global service offerings.
BEST APPROACH TO REACH Koen Tamsyn
Reach out via LinkedIn or verified work email by referencing their current cybersecurity leadership priorities at NTT DATA and proposing how your solutions can streamline their networking division's enterprise client implementations.
Business Unit Lead Cybersecurity & Networking at NTT DATA, Inc. in September 2025 - Present
Business Unit Lead Cybersecurity at Inetum-Realdolmen in March 2024 - September 2025
Solution Manager Cybersecurity at Inetum-Realdolmen in January 2023 - March 2024
Enterprise Security Architect & Teamlead at Inetum-Realdolmen in January 2021 - January 2023
Enterprise Security Architect at Inetum-Realdolmen in December 2018 - January 2021
IT Infrastructure Architect at Inetum-Realdolmen in February 2018 - December 2018
Implementation Consultant ICT at Ferranti Computer Systems in February 2017 - February 2018
Systeem- en netwerkbeheerder at One-IT BVBA in February 2011 - February 2017
Karel de Grote-Hogeschool, Bachelor Toegepaste Informatica, July 2026
NTT DATA, Inc. is a trusted global innovator of business and technology services. We're committed to helping clients innovate, optimize and transform for long-term success. Our R&D investments help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies. Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure, and connectivity.
Discover more about NTT DATA, Inc.
Security | Cloud | Automate
Ms L4 Engineer at NTT Ltd.
(January 2022 – Present)
VP Go-to-market Software and Support Services Europe at NTT Data, Inc.
VP GTM Software and Support Services Europe at NTT DATA, Inc.
(January 2022 – Present)
Cloud Expert Advisory | AWS Solution Architect Professional | AWS Advanced Networking Specialty | AWS Developer Associate | Azure Fundamentals | CCIE - SP | CCDP | CCNP | Aviatrix Certified Engineer
Cloud Expert Advisory at NTT Ltd.
(October 2022 – Present)
Sales Manager, Public Sector
Head of Sales, Public Sector at NTT DATA, Inc.
(January 2025 – Present)
🌐 SOC Analyst @ NTT DATA | Top 2% TryHackMe
SOC Analyst at NTT DATA, Inc.
(October 2025 – Present)
Technical Architect @ NTT Data, Inc. | 24x Salesforce Certified
Salesforce Architect at NTT DATA, Inc.
(May 2024 – Present)
What is Koen Tamsyn email address?
Email Koen Tamsyn at [email protected] and [email protected]. This email is the most updated Koen Tamsyn's email found in 2026.
How to contact Koen Tamsyn?
To contact Koen Tamsyn send an email to [email protected] or [email protected]. (updated on November 08, 2025)
What company does Koen Tamsyn work for?
Koen Tamsyn works for NTT DATA, Inc..
What is Koen Tamsyn's role at NTT DATA, Inc.?
Koen Tamsyn is Business Unit Lead Cybersecurity & Networking
What industry does Koen Tamsyn work in?
Koen Tamsyn works in the Information Technology & Services industry.
