C004565 Penetration Tester (NS) - WED 9 Sep RELAUNCH

Summary

The Penetration Tester will conduct web and infrastructure security testing, participate in Red/Blue team exercises, and provide security design reviews for NATO. This role requires extensive experience in security assessments and an active NATO SECRET clearance.

Previously proposed candidates were not compliant for the following reason: The profile does not demonstrate clear, independently verifiable experience aligning with the minimum requirement of 3 years in hands-on penetration testing.

Deadline Date: Wednesday 9 September 2026

Requirement: Penetration Tester

Location: Mons, BE

Full Time On-Site: Yes

Time On-Site: 100%

Total Scope of the request (hours): 392

Required Start Date: 15 October 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.

Requirements

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 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.

See also

Security jobs by country — openings, pay and top skills →

Tailor your CV for this role?

We couldn't check your fit for this role — add a CV to your profile to see it next time.

A new version of freehire is available