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Dieter Van Thienen

Head of Operations @ Undisclosed
Brussels, Belgium

Dieter is a seasoned technology and operations consultant who turns concepts into global, scalable products. Blending engineering depth with board-level strategy, he has led M&A integrations and delivered products certified to ISO 27001 and banking-grade security standards. By translating strategy into scalable architecture, building cross-functional teams and streamlining processes, he consistently shortens time-to-market and converts technology into measurable business value.

Tech stack

Miscellaneous

DevOps
Project Management
Software testing

Cloud

Cloud

Security

Cybersecurity

Systems

Microsoft 365 / Office 365
Language
Native Dutch
Dutch
Native
English
Fluent
French
Average
German
Average
Norwegian
Average
Work experience
Since 2014
Head of Operations @ Undisclosed
01 January 2025 - Present

Promoted from Head of IT to Chief Technology Officer, steering technology during ARR growth and the company’s first acquisition.

Founder & Product Owner @ Yumm
01 January 2020 - Present

Secured ISO 27001 certification and full GDPR/NIS2 compliance; served as Data Protection Officer and interim CISO. Oversaw external cybersecurity audits and coordinated annual penetration testing.

Founder @ Heleus
01 January 2020 - Present

Offers fractional CTO services, advising startups, scaleups and SMEs to shape product and technology strategy.

Fractional Chief Technology Officer @ The Hazard Factory
01 January 2024 - 01 January 2025

Directed to structure and lead delivery operations at a global sales-as-a-service firm, overseeing freelancers, project execution and client engagement as de facto COO. Responsible for operational scalability, resource management and customer success across high-growth startup and scaleup clients.

CHIEF TECHNOLOGY OFFICER @ Invitedesk
01 January 2022 - 01 January 2024

Promoted from Head of IT, leading several teams of engineers, designers, and POs; implemented OKRs and Agile delivery.

Researcher & Lecturer @ Vrije Universiteit Brussel
01 January 2014 - 01 January 2017

Worked on a Horizon 2020 R&D project and taught Bachelor and Master courses.

Education experience
Since 2007
Computer Science @ Vrije Universiteit Brussel
01 September 2010 - 30 June 2014

Master of Science in Computer Science.

Applied Informatics @ Hogeschool Gent
01 September 2007 - 30 June 2010

Bachelor of Applied Informatics.

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