Senior Penetration Tester — Red/Blue Team Expert

Spektrum; Eigenbrakel; On-site; EUR 85,000 - 120,000; Full time

Job summary

Spektrum seeks an experienced Senior Penetration Tester to support cybersecurity assessments, penetration testing and Red/Blue Team activities for NATO exercises in Belgium. You will focus on web application and infrastructure testing, vulnerability assessment, and security consultancy.

The role requires communicating findings to technical teams and senior stakeholders, including NATO leadership, with on-site requirements in Belgium and eventual relocation planning to Brussels.

Qualifications

• More than 3 years of penetration testing, network security architecture and vulnerability assessment.
• NATO Secret or higher security clearance is required.
• Full-time on-site work in Belgium with security-focused reporting.

Responsibilities

• Lead or participate in Red Team and Blue Team activities during NATO exercises.
• Conduct penetration testing of web apps, IT infrastructure and applications.
• Perform security design reviews to ensure NATO compliance.
• Provide security consultancy and recommendations to projects.
• Identify and assess security vulnerabilities in OS, software, networks and protocols.
• Evaluate risks and develop mitigation plans.
• Prepare structured penetration test reports with executive summaries and remediation plans.
• Present assessment results to technical teams and senior leadership.

Skills

Penetration testing

Network security

Vulnerability assessment

Security reporting

Python

Perl

Ruby

Shell scripting

Unix admin

Windows admin

Job description

Spektrum seeks an experienced Senior Penetration Tester to support cybersecurity assessments, penetration testing and Red/Blue Team activities for NATO exercises in Belgium. You will focus on web application and infrastructure testing, vulnerability assessment, and security consultancy.

The role requires communicating findings to technical teams and senior stakeholders, including NATO leadership, with on-site requirements in Belgium and eventual relocation planning to Brussels.