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Network Firewall Engineer

Robert Half

Iselin, NJ 08830 • $70.00 to $85.00 / hr • 11/14/2026

Job Description

Job Description

Senior Network Security Engineer (Firewall)

About the Opportunity

Our client, a large enterprise organization with a complex and highly available technology environment, is seeking a Senior Network Security Engineer with deep expertise in firewall engineering and enterprise networking. This individual will be responsible for designing, implementing, securing, and supporting critical network infrastructure while serving as a subject matter expert for next-generation firewall technologies.

Key Responsibilities

  • Design, implement, and maintain enterprise network security solutions with a focus on Palo Alto Networks and Fortinet firewalls.
  • Develop and manage firewall policies, security rules, NAT configurations, VPNs, and access controls.
  • Analyze firewall logs, network traffic, and security events to identify risks and troubleshoot connectivity issues.
  • Lead firewall upgrades, migrations, and lifecycle management initiatives.
  • Provide advanced troubleshooting for network and security issues involving routing, switching, wireless, VPN, and WAN/LAN environments.
  • Support enterprise network infrastructure including routers, switches, wireless systems, and security platforms.
  • Partner with security, infrastructure, and application teams to deliver secure and reliable services.
  • Participate in incident response efforts, root cause analysis, and remediation activities.
  • Maintain technical documentation, standards, and operational procedures.

Required Qualifications

  • Bachelor's degree in Information Technology, Computer Science, or equivalent combination of education and experience.
  • 10+ years of enterprise networking experience.
  • Strong hands-on experience with Palo Alto Networks and Fortinet firewall administration and engineering.
  • Expertise in firewall policy management, NAT, VPNs, traffic analysis, and network security best practices.
  • Advanced knowledge of TCP/IP, routing, switching, wireless networking, and WAN/LAN technologies.
  • Experience troubleshooting complex network and security environments.
  • Familiarity with optical networking technologies such as DWDM and ROADM is highly desirable.
  • Strong communication, problem-solving, and project coordination skills.

Preferred Certifications

  • CCNP or CCIE
  • Palo Alto Networks security certifications