Sr. Network Security Engineer; F5
Listed on 2026-06-02
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IT/Tech
Cybersecurity, Systems Engineer
Job Description
Strong expertise in F5 Advanced WAF and BIG-IP LTM VIPs Self IPs SNATs HA Identify and clean unused orphaned IPs on F5 load balancers to improve performance Review and remove unused duplicate or obsolete firewall policies across HQ DR while maintaining security and compliance Ensure all changes align with HA and DR requirements Assess devices applications and network components using public IPs Analyze dependencies and evaluate impact of changes Classify firewall rules and DNS entries by usage and business criticality Plan cleanup migration timelines sequencing rollback Design private IP ranges aligned with architecture Audit and clean DNS records without service impact Perform secure controlled changes with minimal downtime Coordinate with cross-functional teams SOC apps ops Conduct post-change validation for availability security and performance Establish periodic reviews for firewall F5 IP and DNS Maintain detailed documentation for audits and compliance
Requirements- Hands‑on NGFW NAT and access control management.
- Strong knowledge of IP addressing DNS routing and security architecture.
- Experience in HA/DR, mission‑critical environments, and change management.
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