Network and Security Administrator

First U.S. Community Credit Union•Sacramento, CA

7d•$38 - $57

About The Position

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.

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.

Nice To Haves

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)

Responsibilities

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.
Administer and support the credit union’s VDI platform (e.g., VMware Horizon, Citrix, AVD, or equivalent).
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.
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.
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.
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.
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.
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.