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Join our team as Systems Administrator and play a key role in growing our company!

Greenfield Rehabilitation Agency is a therapist-owned and operated organization providing physical, occupational, and speech therapy services to senior communities, skilled nursing facilities, home health agencies, and in-home services across Wisconsin. Our pediatric division, Rehab Resources, partners with Birth to Three programs, school districts and has outpatient clinics across the state. We have been delivering on our mission to provide an exceptional experience for our patients, partners, and team members since 1967. Our reach spans across the state of Wisconsin, making us one of the largest and most trusted therapy providers in the region. We are guided by our core values of agility, integrity, and community.

Position Overview

The System Administrator is responsible for the operation, maintenance, documentation, and security of the organization’s IT infrastructure. This includes ensuring reliable performance of Windows-based servers, networking equipment, and core IT services. This is a rare opportunity to shape the technical systems and processes that will support our next stage of growth. Responsibilities of this highly visible and impactful role include:

Server Administration

• Install, configure, and maintain Windows servers, both physical and virtual.
• Manage Active Directory, Group Policy, DNS, DHCP, and other core infrastructure services.
• Monitor server performance, apply patches, and implement upgrades as needed.
• Manage storage solutions (SAN/NAS/QNAP/etc.) and backup/recovery systems.

Network Administration

• Configure and maintain firewalls, routers, switches, VPNs, and wireless networks.
• Ensure network security through segmentation, access controls, and monitoring tools.
• Troubleshoot network performance issues and implement optimizations.
• Create and maintain documentation of network diagrams, IP addressing, and equipment inventory.

Microsoft 365

• Designs, deploys, manages and serves as primary expert for the Microsoft 365 environment.
• Administers and maintains M365 collaboration applications including but not limited to Office 365, SharePoint, Teams, and OneDrive.

Manage Security & Compliance

• Apply security best practices for servers and networks, including patching and hardening.
• Manage endpoint protection, IDS/IPS, and network monitoring tools.
• Assist with audits, compliance requirements, and cybersecurity initiatives.

Support & Projects

• Manage new user equipment set up, onboarding and offboarding processes.
• Provide help desk support to team members.
• Manage support and vendor relationships for phone and printers.
• Provide technical support for escalated server and network issues.
• Collaborate with leadership on infrastructure upgrades and new technology rollouts.
• Participate in disaster recovery and business continuity planning/testing.
• Create and maintain accurate technical documentation and SOPs.

Qualifications

• Bachelor’s degree in IT, Computer Science or related field
• Experience as a Systems Administrator in a Windows-based environment
• Strong knowledge of Microsoft 365 administration
• Familiarity with Active Directory and hybrid identity setups
• Understanding of networking fundamentals (TCP/IP, DNS, VPNs)
• Experience with virtualization (VMware, Hyper-V)
• Strong troubleshooting and analytical abilities
• Ability to set priorities, meet deadlines, and multi-task in a fast-paced environment with minimal supervision.
• Solid self-starter and collaborator who understands and can articulate key drivers of the business and can prioritize efforts and resources accordingly and has a history of leading improvement initiatives that have driven successful results.

Organizational Culture

At Greenfield, our culture is rooted in meaningful relationships, clinical excellence, and a deep commitment to our mission. We are a values-driven organization led by a mission-oriented executive team that champions innovation, professional growth, and collaboration. We foster a workplace where voices are heard, relationships are prioritized, and every team member contributes to our shared success. The ideal candidate for this role will be energized by a culture that values connection, transparency, and continuous improvement.