We are looking for a Network Security Administrator to support and strengthen enterprise security operations in Phoenix, Arizona. This Long-term Contract position focuses on protecting network infrastructure, improving application and cyber security practices, and maintaining effective threat monitoring across the environment. The ideal candidate will bring hands-on experience with security platforms and firewalls while helping ensure a resilient and well-governed security posture. Responsibilities: • Administer and enhance network security controls to safeguard enterprise systems, applications, and data assets. • Configure, monitor, and maintain SIEM tools to identify suspicious activity, investigate alerts, and support timely incident response. • Manage and optimize Palo Alto firewalls and related security policies to enforce secure connectivity across the organization. • Support application security efforts by reviewing risks, recommending protections, and collaborating with technical teams on remediation. • Oversee enterprise security measures across network environments, ensuring alignment with security standards and operational needs. • Troubleshoot security-related network issues and implement corrective actions to maintain availability and protection. • Work with Aruba networking technologies to support secure access, segmentation, and overall infrastructure performance. • Document security configurations, procedures, and findings to promote consistency, audit readiness, and knowledge sharing.

• Proven experience in cyber security with a strong focus on network and enterprise security administration. • Hands-on expertise with Security Information and Event Management (SIEM) platforms for monitoring and analysis. • Practical experience configuring and supporting Palo Alto Networks firewalls in a production environment. • Knowledge of application security principles and common approaches for reducing risk across business systems. • Familiarity with enterprise network security concepts, including access control, segmentation, and threat detection. • Experience working with Aruba technologies within secured network environments. • Ability to investigate security events, troubleshoot technical issues, and communicate recommendations clearly.

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Phoenix, AZ
onsite
Temporary / Contract
38 - 44 USD / Hourly
We are looking for a Network Security Administrator to support and strengthen enterprise security operations in Phoenix, Arizona. This Long-term Contract position focuses on protecting network infrastructure, improving application and cyber security practices, and maintaining effective threat monitoring across the environment. The ideal candidate will bring hands-on experience with security platforms and firewalls while helping ensure a resilient and well-governed security posture. Responsibilities: • Administer and enhance network security controls to safeguard enterprise systems, applications, and data assets. • Configure, monitor, and maintain SIEM tools to identify suspicious activity, investigate alerts, and support timely incident response. • Manage and optimize Palo Alto firewalls and related security policies to enforce secure connectivity across the organization. • Support application security efforts by reviewing risks, recommending protections, and collaborating with technical teams on remediation. • Oversee enterprise security measures across network environments, ensuring alignment with security standards and operational needs. • Troubleshoot security-related network issues and implement corrective actions to maintain availability and protection. • Work with Aruba networking technologies to support secure access, segmentation, and overall infrastructure performance. • Document security configurations, procedures, and findings to promote consistency, audit readiness, and knowledge sharing.
2026-06-29T00:00:00Z

Network Security Administrator Job in Phoenix, AZ | Robert Half