C004908 Penetration Tester (NS) - FRI 23 Oct RELAUNCH

EMW; Eigenbrakel; Remote; EUR 70,000 - 110,000; Full time

Job summary

EMW is seeking a Penetration Tester with an active NATO SECRET clearance to operate on-site in Belgium. You will lead and perform web, infrastructure, and application penetration testing, and deliver security design reviews and practical remediation plans.

The role requires deep knowledge of security products, OS/network administration, and scripting. You will communicate findings to executive and technical audiences, coordinating with NATO authorities and internal teams.

Qualifications

• Must hold an active NATO SECRET security clearance.
• Extensive web application penetration testing experience (3+ years).
• Extensive IT infrastructure penetration testing experience (3+ years).
• Extensive network security architecture design experience (3+ years).
• Extensive experience assessing vulnerabilities in OS, software, protocols & networks (3+ years).
• Experience researching and evaluating security products & technologies (3+ years).
• Knowledge of UNIX and Windows system/network administration.
• Extensive use of penetration testing tools, techniques, and methodologies (3+ years).
• Scripting in Perl, Python, Ruby, or shell (bash/ksh/csh).
• Strong knowledge in security concepts: authentication, cryptography, malware protection.

Responsibilities

• Lead and/or participate in Red/Blue Team NATO exercises.
• Provide web, infrastructure and application level penetration testing.
• Conduct security design reviews to ensure NATO policy compliance.
• Offer security consultancy to projects and plans.
• Coordinate with NCIA boards and security authorities on accreditation.
• Present security findings and remediation plans to diverse audiences.
• Collaborate with the Penetration Testing Cell head for stakeholder coordination.

Skills

NATO SECRET clearance

Web app pentesting

IT infrastructure pentesting

Network security design

OS/Software/protocol security

Security products evaluation

UNIX/Windows administration

Penetration testing tools & methods

Scripting (Perl/Python/Ruby/shell)

Job description

Deadline Date: Friday 23 October 2026

Requirement: Penetration Tester

Location: Braine-l'Alleud, BE (Further location of the post will be Brussels following move of NCSC from BLA to Brussels.)

Full Time On-Site: Yes

Time On-Site: 100%

Total Scope of the request (hours): 400

Required Start Date: 23 November 2026

End Contract Date: 31 December 2026

Required Security Clearance: NATO SECRET

Duties & Role:

The duties of the individual mainly focus on:

• Lead and/or be part of the Red/Blue Team during NATO military exercises;
• Provide Web, infrastructure and application level penetration testing;
• Provide security design reviews to ensure compliance with NATO policies and directives;
• Provide security consultancy and advice to projects, plans, and other entities;
• Build and sustain effective communications with different stakeholders; specifically, the NCIA Configuration Control Board, Security Accreditation Boards, NATO Security Accreditation Authorities, and NCI Agency organization units supporting accreditation processes.
• Brief at both executive and technical levels on security reports and testing outcome, including at flag officer level;
• In co-ordination with the Head of the Penetration testing Cell, ensure proactive collaboration and coordination with internal and external stakeholders.

Skill, Knowledge & Experience:

• The candidate must have a currently active NATO SECRET security clearance
• Extensive knowledge and experience (more than 3 years) in web application penetration testing;
• Extensive knowledge and experience (more than 3 years) in IT infrastructure penetration testing;
• Extensive knowledge and experience (more than 3 years) in network security architecture design;
• Extensive knowledge and experience (more than 3 years) in assessing security vulnerabilities within OS, software, protocols & networks;
• Extensive knowledge and experience (more than 3 years) in researching and evaluating security products & technologies;
• Knowledge in system and network administration of UNIX and Windows systems;
• Extensive knowledge and experience (more than 3 years) in the use of penetration testing tools, techniques, and recognized testing methodologies;
• Scripting skills in at least one of the following: Perl, Python, Ruby, shell (bash, ksh, csh);
• Technical knowledge in system and network security, authentication and security protocols, cryptography, application security, as well as, malware infection techniques and protection technologies.
• Ability to evaluate risks and formulate mitigation plans;
• Proven ability to write clear and structured technical reports including executive summary, technical findings and remediation plan for several different audiences