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Network and Security Administrator
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Network and Security Administrator
- Sacramento, California, United States
- Sacramento, California, United States
Über
$38.28/hour - $57.42/hour, Non-Exempt, Dependent on experience Position Title
Network and Security Administrator Reports To
Information Technology Manager Job Grade
N12 Job Summary
The Network and Security Administrator is responsible for supporting and maintaining the credit union’s core IT infrastructure—including servers, storage, backups, VDI, networks, cloud services, and Microsoft 365—while also contributing to cybersecurity operations, vulnerability remediation, and risk management processes. This hybrid role combines Systems/Network Administration with Information Security responsibilities and plays a key role in maintaining system reliability, performance, security, and high availability. This position provides Tier 2/3 technical support, resolves escalated issues within SLA commitments, and collaborates with internal teams and external partners to ensure a secure, compliant, and resilient technology environment. Duties and Responsibilities
Systems Administration
Deploy, configure, and maintain Windows Server environments (physical and virtual). Administer Azure Active Directory and hybrid Active Directory, including SAML SSO integrations. Manage Microsoft 365 tenants, security configurations, permissions, and application settings. Maintain server patching, OS updates, application patching, and endpoint protection policies. Support backup, replication, SAN/NAS storage, and data protection technologies. Monitor and optimize system performance, uptime, capacity, and resource utilization. Maintain alerting, monitoring, and system health‑check processes. Document system configurations, lifecycle changes, and infrastructure behaviors. Virtual Desktop Infrastructure (VDI) Administration
Administer and support the credit union’s VDI platform (e.g., VMware Horizon, Citrix, AVD). Deploy, update, and maintain gold images, application layers, and virtual workstation pools. Monitor VDI performance, utilization, and user session health. Troubleshoot login issues, profile errors, application performance problems, and connectivity issues. Implement VDI security controls, including access policies, MFA integration, and profile restrictions. Ensure virtual desktops remain compliant with patching, antivirus, and configuration baselines. Assist with VDI capacity planning, scaling, and lifecycle updates. Document VDI processes, master image changes, and update procedures. Network Administration (LAN/WAN/Security)
Support and administer network infrastructure including switching, routing, VPN, wireless, and firewalls. Troubleshoot advanced LAN/WAN issues such as VLANs, routing, DNS, DHCP, VPN tunnels, QoS, and SD‑WAN components. Monitor network health, performance, and availability; assist with optimization and segmentation strategies. Work with vendors to resolve network outages, performance issues, or configuration updates. Assist with firewall rule management, security policies, content filtering, and network hardening. Information Security & Risk Management
Perform continuous monitoring of system, network, identity, and security events. Support vulnerability management by reviewing scan results, prioritizing findings, and implementing remediation. Apply OS, M365, firmware, and application patches in alignment with security requirements. Assist with third‑party risk assessments, vendor security reviews, and evidence collection. Analyze audit logs and alerts for anomalies, suspicious activity, or policy violations. Participate in incident response activities and implement corrective actions. Assist with identity governance, least‑privilege standards, and periodic access reviews. Support cybersecurity initiatives such as MFA, endpoint protection, email security, and network hardening. Tier 2/3 Support & Operations
Provide advanced troubleshooting for server, network, VDI, cloud, and security incidents. Resolve escalated support tickets within defined SLAs and document resolutions thoroughly. Serve as a technical escalation point for the help desk and provide guidance, documentation, and support. Conduct root‑cause analysis on recurring issues and implement long‑term solutions. Project Support & Application Lifecycle Responsibilities
Participate in system upgrades, infrastructure enhancements, migrations, and security initiatives. Evaluate new technologies, recommend solutions, and assist with architectural improvements. Support planning, testing, deployment, and documentation for new systems and application upgrades. Manage patching, updates, hardware refreshes, lifecycle planning, and end‑of‑life replacement cycles. Documentation, Reporting & Compliance
Produce and maintain documentation for infrastructure configurations, security processes, VDI images, and network diagrams. Maintain runbooks, SOPs, disaster recovery documentation, and system inventories. Provide KPI reporting, infrastructure health metrics, and security posture updates. Prepare logs, evidence, and documentation required for audits, risk assessments, and regulatory reviews. Education/Experience Requirements
Bachelor’s degree in IT, Computer Science, Cybersecurity, or equivalent or formal industry certifications recognized as equivalent experience. 3–5+ years of experience in systems administration, network engineering, or infrastructure roles. Experience administering VDI environments (Citrix, VMware Horizon, AVD, etc.). Experience with security monitoring, vulnerability remediation, and compliance practices. Deep experience with Windows Server, Active Directory, Azure AD, and Microsoft 365. Strong understanding of LAN/WAN networking, including routing, switching, VLANs, VPN, and firewall technologies. Strong troubleshooting skills across servers, networks, cloud systems, and security tools. Knowledge of cybersecurity best practices and hardening standards. Excellent written and verbal communication skills. Ability to work in a fast‑paced, highly regulated environment and maintain confidentiality. Preferred Certifications (not Required But Strongly Preferred)
CompTIA Security+ or CySA+ Microsoft Certified: Azure Administrator Associate Microsoft 365 Certified: Enterprise Administrator Expert Cisco CCNA or equivalent VMware VCP, Citrix CCA‑V, or Azure Virtual Desktop certifications Fortinet NSE 3–5 (if applicable) CompTIA Network+ CISA or CISSP (nice‑to‑have) Working Conditions/Physical Demands
Works in an office environment using standard office and IT equipment. Must be able to remain in a stationary position for extended periods while working at a computer. Frequently moves throughout the office to assist with system, network, or VDI hardware. May lift and move equipment up to 30 pounds, including servers, networking gear, and peripherals. May work extended or irregular hours during upgrades, maintenance windows, or incident response. Occasional travel to branch locations or vendor sites for installations, support, or maintenance.
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