Hands-On IT Systems Administrator — Windows Server & Cloud

ENC - ElDorado National California Inc.; Riverside (CA); On-site; USD 110,000 - 130,000; Full time

Benefits offered by this job

Medical benefits

401(k) with employer match

Paid time off & holidays

Employee referral program

Career growth opportunities

Job summary

ElDorado National California Inc. (ENC) is seeking an IT Systems Administrator to provide hands-on Tier 1–3 support, manage Windows Server 2025 physical and virtual servers, and maintain a hybrid Microsoft 365 environment in Riverside, CA.

You will handle onboarding/offboarding, security, backups, and infrastructure projects, collaborating with IT Analysts and Managers. The role emphasizes desktop and server expertise, strong customer service, and clear documentation.

Qualifications

• Three or more years of professional experience providing desktop, end-user, and systems support in a business environment.
• Strong hands-on experience supporting employee laptops and resolving desktop support issues.
• Experience building, configuring, deploying, and troubleshooting Windows 10 and Windows 11 laptops.
• Experience supporting a hybrid Microsoft 365 environment.
• Working knowledge of Microsoft 365 administration, Active Directory, Microsoft Entra ID, Exchange Online, Teams, and Group Policy.
• Experience maintaining and troubleshooting Windows Server physical and virtual servers, including Windows Server 2025 or a closely related current version.
• Experience administering or supporting Microsoft Hyper-V.
• Ability to troubleshoot hardware, software, operating system, authentication, network connectivity, and application issues.
• Understanding of IT security fundamentals, including patching, account access, multifactor authentication, endpoint protection, and least-privilege practices.
• Strong customer-service skills and the ability to communicate technical information clearly to nontechnical employees.
• Ability to independently prioritize incidents, service requests, routine support work, and infrastructure responsibilities.
• Ability to document systems, procedures, configurations, and troubleshooting steps.

Responsibilities

• Provide Tier 1, Tier 2, and Tier 3 technical support for employees across the organization.
• Diagnose and resolve hardware, software, operating system, connectivity, printing, peripheral, and application issues.
• Build, configure, deploy, maintain, and troubleshoot Windows 10 and Windows 11 laptops.
• Perform laptop replacements, upgrades, imaging, software installation, patching, user profile migration, and equipment swaps.
• Support employee onboarding and offboarding, including account setup, device preparation, application access, and equipment recovery.
• Provide remote and in-person technical support and maintain accurate ticket documentation.
• Assist with routine Tier 1 work during high-volume periods, absences, urgent issues, and onsite support needs.
• Serve as the primary escalation point for the IT Analyst and provide technical guidance and cross-training.
• Support and administer a hybrid Microsoft 365 environment.
• Manage user accounts, groups, licenses, permissions, shared mailboxes, and access requests.
• Assist with access controls, multifactor authentication, account security, and employee lifecycle management.
• Maintain Windows Server 2025 physical and virtual servers.
• Administer and troubleshoot Hyper-V hosts and virtual machines.
• Monitor server performance, capacity, availability, patching, event logs, storage, and system health.
• Support server builds, upgrades, migrations, maintenance, and retirement activities.
• Assist with Active Directory, Group Policy, file services, print services, DNS, and DHCP.
• Maintain technical documentation for servers, applications, configurations, and recovery procedures.
• Support the administration and troubleshooting of network, wireless, firewall, VPN, voice, and remote-access systems.
• Assist with backup monitoring, administration, recovery testing, and restoration activities.
• Support infrastructure improvement projects, system implementations, patching, and security remediation activities.

Skills

Desktop support

Windows OS

Hyper-V

Microsoft 365

Active Directory

Documentation

Tools

Windows Server 2025

Microsoft Hyper-V

Microsoft 365

Active Directory

Exchange Online

Teams

SharePoint

OneDrive

Job description

ElDorado National California Inc. (ENC) is seeking an IT Systems Administrator to provide hands-on Tier 1–3 support, manage Windows Server 2025 physical and virtual servers, and maintain a hybrid Microsoft 365 environment in Riverside, CA.

You will handle onboarding/offboarding, security, backups, and infrastructure projects, collaborating with IT Analysts and Managers. The role emphasizes desktop and server expertise, strong customer service, and clear documentation.