Hartger Ruijs
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Hartger Ruijs Email & Phone Number

Chief Executive Officer at DEFION Security
Location: The Randstad, Netherlands, Netherlands 2 work roles
1 work email found @computest.nl LinkedIn matched
✓ Verified Jun 2026 3 data sources Profile completeness 86%

Contact Signals · 1 work email

Work email h****@computest.nl
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Current company
DEFION Security
Role
Chief Executive Officer
Location
The Randstad, Netherlands, Netherlands
Company size
63 employees

Who is Hartger Ruijs? Overview

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Quick answer

Hartger Ruijs is listed as Chief Executive Officer at DEFION Security, a company with 63 employees, based in The Randstad, Netherlands, Netherlands. AeroLeads shows a work email signal at computest.nl and a matched LinkedIn profile for Hartger Ruijs.

Hartger Ruijs previously worked as Founder & CEO at Computest.

Company email context

Email format at DEFION Security

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{first_initial}{last}@computest.nl
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AeroLeads found 1 current-domain work email signal for Hartger Ruijs. Compare company email patterns before reaching out.

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Profile bio

About Hartger Ruijs

Hartger Ruijs is a Chief Executive Officer at DEFION Security. They possess expertise in testing, test management, linux, performance testing, system testing and 6 more skills.

Listed skills include Testing, Test Management, Linux, Performance Testing, and 7 others.

Current workplace

Hartger Ruijs's current company

Company context helps verify the profile and gives searchers a useful next step.

DEFION Security
Defion Security
Chief Executive Officer
Amsterdam, NH, NL
Website
computest.com
Employees
63
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2 roles

Hartger Ruijs work experience

A career timeline built from the work history available for this profile.

Founder & Ceo

Current
Computest

Zoetermeer

As CEO of Computest Security, I lead a dedicated team of experts committed to helping organizations safeguard themselves against cyber threats. Our services include penetration testing, managed detection and response, and advisory support. (computest.nl)In addition, I oversee our Spanish subsidiary, Incide, specializing in cybersecurity services such as.

Jan 2005 - Present
Team & coworkers

Colleagues at DEFION Security

Other employees you can reach at computest.com. View company contacts for 63 employees →

CИ Computest Иванов Computest Иванов Colleague at Defion SecurityRussia, Russian Federation View → LD Luc De Wolf Luc De Wolf Colleague at Defion SecurityAntwerp Metropolitan Area, Belgium View → MB Marcel Beugelsdijk Marcel Beugelsdijk Colleague at Defion SecurityNieuw-Vennep, North Holland, Netherlands, Netherlands View → NV Nathalie Van Putten Nathalie Van Putten Colleague at Defion SecurityThe Randstad, Netherlands, Netherlands View → AK Amanda Kater Amanda Kater Colleague at Defion SecurityZoetermeer, South Holland, Netherlands, Netherlands View → JD Jean‎ De Cuba Jean‎ De Cuba Colleague at Defion SecurityNetherlands, Netherlands View → EP Eveline Post Eveline Post Colleague at Defion SecurityThe Randstad, Netherlands, Netherlands View → RD Robin De Groot Robin De Groot Colleague at Defion SecurityCapelle Aan Den Ijssel, South Holland, Netherlands, Netherlands View → LM Lebogang Madoda Lebogang Madoda Colleague at Defion SecurityMmabatho, North-West, South Africa, South Africa View → TV Tom Van Rooijen Tom Van Rooijen Colleague at Defion SecurityNieuw-Vennep, North Holland, Netherlands, Netherlands View →
FAQ

Frequently asked questions about Hartger Ruijs

Quick answers generated from the profile data available on this page.

What company does Hartger Ruijs work for?

Hartger Ruijs works for DEFION Security.

What is Hartger Ruijs's role at DEFION Security?

Hartger Ruijs is listed as Chief Executive Officer at DEFION Security.

What is Hartger Ruijs's email address?

AeroLeads has found 1 work email signal at @computest.nl for Hartger Ruijs at DEFION Security.

Where is Hartger Ruijs based?

Hartger Ruijs is based in The Randstad, Netherlands, Netherlands while working with DEFION Security.

What companies has Hartger Ruijs worked for?

Hartger Ruijs has worked for Defion Security and Computest.

Who are Hartger Ruijs's colleagues at DEFION Security?

Hartger Ruijs's colleagues at DEFION Security include Computest Иванов, Luc De Wolf, Marcel Beugelsdijk, Nathalie Van Putten, and Amanda Kater.

How can I contact Hartger Ruijs?

You can use AeroLeads to view verified contact signals for Hartger Ruijs at DEFION Security, including work email, phone, and LinkedIn data when available.

What skills is Hartger Ruijs known for?

Hartger Ruijs is listed with skills including Testing, Test Management, Linux, Performance Testing, System Testing, User Acceptance Testing, Istqb, and Tmap.

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