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Network Security Engineer III - Vertiv
Security Engineer
Senior engineer responsible for day‑to‑day network security operations across enterprise IT and OT environments, managing Palo Alto firewalls, Zscaler cloud security, F5 WAF, and incident response via ServiceNow.
About the role
Key Responsibilities
- Administer and maintain Palo Alto NGFW policies, including security rules, NAT, objects, and zones.
- Monitor, tune, and troubleshoot F5 BIG‑IP WAF (ASM/AWAF) to protect web applications.
- Configure and enforce Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) policies for secure cloud traffic.
- Analyze firewall and security logs, identify threats, and coordinate incident response through ServiceNow.
- Collaborate with OT/Manufacturing teams to ensure security controls meet operational technology requirements.
- Follow change‑control procedures and maintain documentation of security configurations and processes.
Requirements
- 3+ years of hands‑on experience with Palo Alto NGFW, Zscaler, and F5 BIG‑IP WAF in enterprise or OT environments.
- Proficiency in ServiceNow for ticketing, workflow automation, and incident management.
- Strong understanding of network security concepts, firewall rule design, NAT, and VPN technologies.
- Experience with OT/Manufacturing security standards and ability to bridge IT‑OT security gaps.
- Relevant certifications (e.g., PCNSE, Zscaler Certified Cloud Professional, F5 Certified BIG‑IP Administrator) preferred.