Sr. Network Security Engineer (F5)
Skills
About This Role
The 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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