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 UniFi, 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.

Cloud & Microsoft 365 Administration

• Administer Microsoft 365 services (Exchange Online, SharePoint, OneDrive, Teams, and Entra ID) 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.

Network & Security Infrastructure (Ubiquiti UniFi and Fortinet)

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

Server & Systems Administration

• 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; maintain backup and disaster recovery procedures.
• Administer Huntress EDR and Action1 RMM for endpoint protection, patching, remote support, and automation via PowerShell.
• Support the 3CX SBC, Telnyx VoIP, printer server and copier fleet.
• Maintain administrative credentials in Keeper according to security practices.

Helpdesk & User Support

• 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.

IT Operations & Projects

• 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.