Senior Network Security Engineer – F5 & AWAF

Our client, a prominent organization in the public safety sector, is looking for a security expert to support their digital transformation through the modernization of their infrastructure. The role focuses on securing complex application environments while ensuring continuous monitoring and rapid response to security threats.

Responsibilities: Manage and maintain F5 infrastructure, specifically the Advanced Web Application Firewall modules. Install and configure F5 components including APM, ASM, and LTM for secure application delivery. Develop and document technical security policies and monitor their consistent application. Conduct technical risk analyses and implement remediation strategies to address system vulnerabilities. Monitor the security state of IT systems and provide rapid intervention during network intrusions or crisis situations.

Advise on technical solutions for securing external partner connections via intranet and internet. Produce comprehensive technical documentation and incident reports for internal stakeholders.

Requirements: 8+ years of experience in IT security with a focus on network protection and infrastructure management. Expertise in F5 infrastructure including F5 AWAF, APM, ASM, LTM, Identity Provider, and SSL VPN. Strong knowledge of network and application firewalls such as Palo Alto, Forcepoint, and Panorama. Advanced proficiency in network protocols and security standards including TCP/IP, HTTP/HTTPS, SSL, and SNMP. Experience using monitoring and log correlation tools such as Splunk, Nessus, or Elastic SIEM.

Proven capability in performing technical risk analyses and vulnerability remediation. Demonstrated experience in security crisis management and incident response. Methodical and precise approach with a strong ability to document technical processes. You are fluent in French or Dutch with at least basic knowledge of the other, and technical English.

Nice to haves: Knowledge of wireless network security including WPA2 and encryption principles. Experience with Citrix terminal-server solutions.

Offer: Start date ASAP, duration 2 months, full-time, location Brussels, hybrid working model, contract open to both permanent employees and freelancers.