Penetration Tester
On-siteThe Hague, South Holland, The Netherlands
Job Summary
Conduct penetration testing, security assessments, and design reviews across web applications, IT infrastructure, networks, and software. Lead or participate in Red and Blue Team activities during NATO military exercises while identifying vulnerabilities in operating systems, protocols, and applications. Evaluate cybersecurity risks to recommend mitigation actions and prepare structured reports for technical and executive stakeholders. Coordinate with the NCIA Configuration Control Board, Security Accreditation Boards, and relevant teams to support accreditation processes. Present findings to senior leadership and collaborate closely with the Head of the Penetration Testing Cell. This full-time on-site role in The Hague requires a NATO Secret security clearance and includes approximately 10 days of travel to other NATO sites. The assignment runs from September 29 to December 31, 2026, covering 697 hours.
Required Qualifications
- Full-time on-site position in The Hague
- Approximately 10 days of travel
- Required start date: 29 September 2026
- Contract end date: 31 December 2026
- Total scope: 697 hours
- NATO Secret Security Clearance
- Valid NATO Secret security clearance
- More than 3 years of relevant professional experience in penetration testing and the required cybersecurity areas
- Hands-on experience with web application and infrastructure penetration testing
- Experience assessing security vulnerabilities across networks, systems, applications, software, and protocols
- Experience using established penetration testing methodologies and security testing tools
- Experience researching and evaluating cybersecurity technologies and products
- Experience communicating technical security findings to both technical and senior/executive stakeholders
- Strong knowledge of web application penetration testing
- Strong knowledge of IT infrastructure penetration testing
- Knowledge of network security architecture and design
- Ability to identify and assess vulnerabilities in operating systems, software, protocols, and networks
- Experience using penetration testing tools, techniques, and recognized testing methodologies
- Knowledge of UNIX and Windows system and network administration
- Scripting skills in at least one of the following: Python, Perl, Ruby, Bash or other shell scripting
- Strong technical knowledge of: System and network security, Authentication and security protocols, Cryptography, Application security, Malware infection techniques, Malware protection technologies
- Ability to evaluate cybersecurity risks and develop mitigation plans
- Strong technical reporting skills, including writing executive summaries, technical findings, and remediation plans for different audiences
- Strong stakeholder communication and presentation skills
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