Network Security Administrator

Description

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.

Requirements

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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Robert Half is the world's first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

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All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

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