IT Systems Administrator

Job Location:

Penfield Childrens Center - Milwaukee, WI 53233, Position Type:
Full Time, Salary Range: $62,034.00 - $93,052.00 Salary, Job Shift: Day, Job Category:
Information Technology, IT System Administrator

Job Title:

IT Systems Administrator

Department: IT

Reporting Manager:
Director of Information Services

FLSA Status:
Exempt, Salary

Supervisory Responsibility:
No

Compensation Grade: 26

Compensation Range: $62,034 to $93,052

Bonus/Commission Eligible:
No

The IT Systems Administrator supports Penfield's technology operations by managing daily system performance, maintaining cloud and network infrastructure, and ensuring secure, reliable access to organizational systems. This role serves as the primary hands-on administrator for Microsoft 365, hybrid Active Directory, Ubiquiti Uni Fi, Fortinet security systems, and Windows/Linux servers. The IT Systems Administrator independently handles technical issues, implements system updates, and provides Tier 1-3 support while collaborating closely with the Director of Information Services to keep systems stable, secure, and aligned with organizational needs.

This position is ideal for a highly capable technician who enjoys ownership, problem-solving, and working as the operational backbone of a small, efficient IT team.

• Administer Microsoft 365 services (Exchange Online, SharePoint, One Drive, Teams, and Entra ) to ensure secure, reliable access for all staff.
• Manage user provisioning, licensing, groups, permissions, MFA, and conditional access policies.
• Configure and maintain Microsoft Intune and Apple Business Manager for device enrollment, configuration, compliance, and endpoint security.
• Maintain cloud security settings, retention policies, and data protection tools including Purview DLP, sensitivity labels, and message encryption.

• Maintain Uni Fi switches, access points, VLANs, and RADIUS authentication to support stable network performance.
• Administer Forti Gate firewall policies, VPN access, and security configurations.
• Manage Uni Fi Protect surveillance systems and Uni Fi Access door control systems, including credentials, schedules, and retention settings.
• Troubleshoot network issues independently and maintain accurate documentation.

• Maintain Windows Server and Linux systems including patching, updates, and security hardening.
• Administer on-premises Active Directory, Group Policy, DNS, and DHCP, and maintain hybrid identity synchronization with Entra  Entra Connect.
• Manage the Proxmox virtualization environment and support planned server hardware upgrades.
• Monitor system health and performance; maintain backup and disaster recovery procedures.
• Administer Huntress EDR and Action1 RMM for endpoint protection, patching, remote support, and automation via Power Shell.
• Support the 3CX SBC, Telnyx VoIP, printer server and copier fleet.
• Maintain administrative credentials in Keeper according to security practices.

• Provide Tier 1-3 support for hardware, software, and network issues with strong follow-through.
• Support Microsoft 365 applications including Outlook, Teams, and SharePoint.
• Maintain helpdesk ticketing workflows, documentation, and ticket resolution standards.
• Provide staff training, create knowledge base resources, and administer KnowBe4 security awareness training.

• Assist with IT projects, upgrades, migrations, and new system implementations.
• Manage IT asset inventory, procurement, and lifecycle processes.
• Coordinate vendor support cases and maintain positive vendor relationships.
• Support HIPAA Security Rule…