Senior Information Security Engineer (Freelance)

About the role

We are seeking a Senior Information Security Engineer on a long‑term freelance basis to support a large enterprise in Leuven. The role focuses on security operations, vulnerability management, and cyber risk analysis across complex IT environments.

Key responsibilities

• Monitor, investigate and analyse security incidents and suspicious activities.
• Perform root‑cause analysis and coordinate remediation actions.
• Maintain and optimise security monitoring tools and processes.
• Conduct penetration testing and identify security vulnerabilities.
• Support vulnerability management initiatives and follow‑up processes.
• Analyse cyber security risks across multiple IT layers.
• Document, test and track security breaches and corrective actions.
• Collaborate with internal technical and business stakeholders to improve the overall security posture.

Required profile

• Minimum 5 years of experience in information security or cyber security.
• Hands‑on experience in SOC or security‑operations environments.
• Strong analytical and problem‑solving mindset.
• Ability to work independently and within a team.
• Professional proficiency in English and required proficiency in Dutch.

Required skills

• Vulnerability management
• Incident management
• Cyber risk management
• OWASP and web security
• Security monitoring tools
• Penetration testing
• Agile methodologies
• Open systems environments
• Vulnerability management platforms
• Application security
• Infrastructure security