Leonardo Belgium supports EU Institutions, NATO, and international organizations in strengthening their cyber defence capabilities, improving resilience, and protecting critical systems against evolving cyber threats.
Within Leonardo Belgium, the EU CyberSec Regional Center serves as a center of cybersecurity expertise, delivering security services and solutions across complex and mission-critical environments.
We are looking for Medior and Senior Cybersecurity professionals to contribute to a major cybersecurity transformation programme for a European Institution, focused on improving its security posture through concrete technical implementation and remediation activities.
Our most immediate needs include expertise in areas such as:
Vulnerability Management & Patching
Identity & Access Management, MFA & Privileged Access
Application Control & Endpoint Security
System and Application Hardening
Security System Engineering & Cyber Solutions Implementation
DevSecOps & Application Security
Network & Infrastructure Security
The scope remains intentionally broad. We welcome cybersecurity professionals with different technical specializations, and you are not expected to cover all of these areas. Strong hands-on expertise in one or several relevant domains is what matters most.
Job Specifications
Location: Brussels (3 days on-site / 2 days home-working)
Start date: As soon as possible; early applications are appreciated
Type of contract: Employment or Freelance / B2B collaboration
Security Clearance: Eligibility for EU-PSC required
As a Cybersecurity Engineer, you will contribute to the implementation, remediation, and continuous improvement of cybersecurity controls within a large and complex enterprise environment. Depending on your expertise, you may:
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Identify security weaknesses and translate them into concrete remediation actions
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Support or lead vulnerability remediation and patching activities
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Implement or strengthen IAM, MFA, privileged-access, and least-privilege controls
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Deploy application-control, endpoint-security, and system-hardening measures
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Design, integrate, configure, and improve cybersecurity solutions
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Integrate security into development and CI/CD environments
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Contribute to application security, vulnerability assessment, or penetration testing activities
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Strengthen network, infrastructure, cloud, and endpoint security where relevant to your area of expertise
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Troubleshoot complex security and integration issues
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Maintain technical documentation and communicate progress to relevant stakeholders
For Senior profiles, responsibilities may additionally include ownership of technical workstreams, solution design, coordination of remediation activities, and technical guidance to other engineers.
Experience / Education / Certifications
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A Bachelor's or Master's degree in Computer Science, Cybersecurity, Information Technology, Engineering, or a related field is appreciated, although alternative educational paths combined with relevant experience will also be considered
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Several years of professional experience in hands-on technical cybersecurity, with demonstrated experience implementing, operating, integrating, or improving cybersecurity solutions and controls
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For Senior profiles, demonstrated ability to work autonomously, take ownership of complex technical activities, and provide technical guidance when required
Appreciated Personal Attributes
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Structured and analytical mindset
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Strong problem-solving abilities and a pragmatic, solution-oriented approach
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Ability to work autonomously and take ownership of technical activities
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Commitment to continuously developing technical expertise
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Ability to work effectively in a fast-paced and international environment
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Strong interpersonal and communication skills, with the ability to collaborate across technical teams and communicate fluently in English
Successful candidates would typically have hands-on experience in
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Vulnerability Management, patching, and technical remediation
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Identity & Access Management, Multi-Factor Authentication, and Privileged Access Management
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Application control, endpoint security, and system hardening
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Security system engineering and implementation of cybersecurity solutions
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DevSecOps, Application Security, or secure development environments
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Network, infrastructure, and operating system security
Candidates are not expected to cover all of these areas; strong expertise in one or several relevant technical cybersecurity domains is what matters most.
Nice to have
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Experience with enterprise security technologies such as vulnerability scanners, IAM/PAM solutions, endpoint management, EDR/XDR, or application-control technologies
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Experience with Microsoft enterprise security environments (Active Directory, Entra ID, Intune, Defender, Group Policy, or similar)
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Experience with cloud technologies and cloud security
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Scripting or automation skills such as Python, PowerShell, Bash, Ansible, or similar
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Experience with large-scale cybersecurity remediation or transformation programmes
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Cybersecurity certifications
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Previous experience with EU Institutions, NATO, governmental organisations, defence, or other regulated environments
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Exposure to penetration testing, security assessment, or offensive security activities
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French and/or Italian language skills
What's in it for you?
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Work on a high-visibility programme supporting a major European Institution
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Contribute directly to concrete improvements and remediation activities
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Work with a broad range of modern technologies and complex environments
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Collaborate with experienced cybersecurity engineers, architects, and specialists
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Take ownership of challenging technical activities with tangible security impact
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Continue developing your expertise across varied cybersecurity domains and assignments
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Grow within an international cybersecurity organisation with long-term career opportunities
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Join either as a permanent employee or as a freelance professional
Once we receive your CV, we will evaluate it carefully. Should there be a match for this or any other position at Leonardo Belgium, we will be in touch. If there is no match at this stage, we will keep your profile in consideration for future opportunities.