_{12th May, 2025}

About the Role
We are currently looking for an experienced F5 Big-IP System Administrator for a long-term mission with one of our key partners based in Brussels. You will join an experienced infrastructure team and play a crucial role in maintaining, optimizing, and evolving the F5 ecosystem, as well as supporting a broader cloud migration strategy.
 
Responsibilities

• Provide Level 3 support for all F5 Big-IP platforms (LTM, ASM, APM).
• Participate in infrastructure consolidation and version upgrade projects.
• Develop and update deployment and maintenance procedures.
• Support security operations and vulnerability remediation efforts.
• Contribute to the migration of infrastructure to Azure cloud.
• Implement and manage Infrastructure as Code practices.

• F5 BIG-IP LTM: Load balancing, pool configuration, persistence rules, SSL certificate management.
• F5 BIG-IP ASM: Creation of app security policies (e.g., SQL injection, XSS protection).
• F5 BIG-IP APM: Secure access and identity policy implementation.
• Networking Protocols: TCP/IP, DNS, SSL/TLS, HTTP/HTTPS.
• Automation/Scripting: iRules (TCL), Bash, PowerShell, iControl REST API.
• Cloud & Virtualization:
  • Experience deploying F5 in virtual environments and in the cloud (VMware & Azure).
  • Familiarity with F5 Cloud Edition in hybrid setups.
• Authentication Standards: OAuth/OpenID, SAML 2.0.
• Certificates: SSL/TLS certificate lifecycle and secure connectivity.
• Troubleshooting:
  • Analyzing logs.
  • Using diagnostic tools (tcpdump, Wireshark, Splunk, firewall logs).
  • Identifying and resolving configuration issues.

• Minimum 3 years of experience with F5 BIG-IP administration and support.
• Fluent in French and Dutch.
• Comfortable with related tools like firewalls, proxies, and cloud platforms (Azure).
• F5-CA or F5-CTS certification required.
• Cloud certifications (Azure/AWS) are a plus.

• Join a leading IT team within a reputable organization based in Brussels.
• Work on strategic infrastructure and cloud projects.
• Long-term engagement offering stability and technical growth.
• Start ASAP.