IT Systems Administrator

Penfield Children's Center•Milwaukee, WI

25d•$55,388 - $83,083•Onsite

About The Position

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. The role is the primary hands-on administrator for Microsoft 365, hybrid Active Directory, Ubiquiti UniFi, Fortinet security systems, and Windows and Linux servers. The administrator handles technical issues, implements system updates, and provides Tier 1–3 support while working with the Director of Information Services to keep systems stable, secure, and aligned with organizational needs. This position supports cloud services, network and security infrastructure, servers and systems, helpdesk operations, and IT projects. It also supports HIPAA Security Rule compliance, business continuity, and disaster recovery planning. The role has no supervisory responsibility.

Requirements

At least 5 years of IT systems administration experience supporting cloud, network, and server environments.
Hands-on Microsoft 365 experience, including Exchange, SharePoint, Teams, and Entra ID.
Experience with virtualization platforms such as Proxmox, VMware, Hyper-V, or similar.
Bachelor’s degree or equivalent experience in IT, Computer Science, or a related field.
Windows Server proficiency and working knowledge of Linux systems for mixed-environment support.
Ubiquiti UniFi proficiency, including switches, access points, VLANs, and authentication workflows.
Knowledge of networking fundamentals, including TCP/IP, DNS, DHCP, VLANs, routing, and firewall management.
PowerShell automation skills for scripting, task automation, and system administration.
Ability to explain technical concepts clearly to non-technical users.
Ability to work independently, manage priorities, and follow through without close supervision.
Troubleshooting and problem-solving ability, with strong analytical skills and persistence.
Must meet required health and safety clearances under Penfield Children’s Center policy, including an annual flu vaccine and tuberculosis test.
Ability to stand, walk, sit, bend, stoop, kneel, crouch, and squat frequently throughout the workday.
Ability to lift, carry, push, or pull up to 25 pounds, with or without reasonable accommodation, and 50 pounds with assistance.
Ability to view computer screens, read printed materials, and accurately process written information.
Ability to sit for extended periods while working at a desk or computer workstation.

Nice To Haves

Ubiquiti UniFi experience with switches, access points, VLANs, and gateways.
Experience with IP-based cameras and physical access-control systems, including UniFi Protect and UniFi Access.
Experience in HIPAA or regulated environments supporting security controls and compliance workflows.
Experience with EDR/RMM tools such as Huntress, Action1, or similar.
Experience managing Apple devices through Apple Business Manager and Intune.
Relevant certifications such as Microsoft 365 Certified: Endpoint Administrator Associate, CompTIA Security+, CompTIA Network+, or similar.
Additional scripting skills in Python or Bash for automation, integration, and workflow improvements.
Basic SQL skills and ability to run basic queries for reporting, troubleshooting, or systems intelligence.
Ability to learn new systems quickly, adapt to evolving technology needs, and stay current with best practices.

Responsibilities

Administer Microsoft 365 services, including Exchange Online, SharePoint, OneDrive, Teams, and Entra ID.
Manage user provisioning, licensing, groups, permissions, multifactor authentication, 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 UniFi switches, access points, VLANs, and RADIUS authentication.
Administer FortiGate firewall policies, VPN access, and security configurations.
Manage UniFi Protect surveillance and UniFi 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 ID through Entra Connect.
Manage the Proxmox virtualization environment and support planned server hardware upgrades.
Monitor system health and performance and maintain backup and disaster recovery procedures.
Administer Huntress EDR and Action1 RMM for endpoint protection, patching, remote support, and PowerShell automation.
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 compliance through security controls, audit log review, incident response support, and documentation for risk assessments and NIST-aligned gap assessment.
Participate in business continuity and disaster recovery planning.
Perform other duties as assigned.