Network Security Administrator Job at Robert Half (Marysville)

Job Description

The Network Security Administrator is responsible for protecting the organization’s network infrastructure through proactive monitoring, configuration, and management of next‑generation firewalls and related security technologies. This role focuses heavily on NGFW Next-Generation Firewalls, ensuring secure and reliable connectivity across enterprise environments. The specialist will be a key contributor to incident response, threat mitigation, and continuous improvement of security controls.

Job Responsibility

Configure, manage, and maintain Next‑Generation Firewalls (NGFW), including policies, objects, NAT rules, App‑ID, User‑ID, threat prevention profiles, and Remote access VPN, ACL’s, IDS/IPS policies
Perform regular firewall rule reviews, cleanup, and optimization to improve performance and reduce risk
Monitor network security alerts, traffic anomalies, and firewall logs using vendor specific tools, SIEM platforms, and packet capture utilities
Investigate and remediate network‑based security incidents, coordinating with SOC or incident response teams as necessary
Perform security event correlation and escalation following established SOPs
Support secure network connectivity across data centers, branch sites, cloud environments, and remote access solutions
Troubleshoot layer 2/3 issues related to routing, switching, VPN tunnels, and connectivity impacts to security appliances
Assist in deploying secure architectures for new network builds, migrations, and cloud integrations

Requirements

3–7 years of experience in network security operations or firewall engineering
Hands‑on experience with: Next-Generation Firewall NGFW and site‑to‑site/remote access VPNs
Strong understanding of IP networking (TCP/IP, routing, switching, VLANs, BGP/OSPF, NAT)
Experience with log analysis, packet captures, and troubleshooting tools (e.g., Wireshark)
Knowledge of threat prevention technologies (IDS/IPS, URL filtering, DNS security, malware analysis)
Overtime, frequency depends on business needs and support requirements for production infrastructure
On call availability, PC equipment & access provided for quick response to incidents, anytime
providing support, troubleshooting & resolve remote or on-site
Weekend and or adjusted shift required to execute & verify system changes for the application, Application hardware or software
Open office environment, align with all plant policies and all required training

Nice to have

Relevant certifications such as: NGFW brand specific certifications
CCNP Security, CCNA Security (Cisco)
Security+, CySA+, CEH, or GSEC
Experience with SIEM tools (Splunk, Sentinel, QRadar)
Familiarity with cloud security for Azure, AWS, or GCP
Scripting experience (Ansible, Python, PowerShell, or similar) for automation is a plus

What we offer

medical, vision, dental, and life and disability insurance
eligible to enroll in our company 401(k) plan
free online training

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