IT Systems Administrator

Position Summary S&P Air Control is seeking a highly motivated and detail-oriented IT Systems Administrator to support and maintain the company's multi-site infrastructure. This role requires strong ownership, accountability, communications skills, and the ability to independently manage systems, tasks, and projects while ensuring reliable performance, security, and scalability across the environment. Key Responsibilities Administer and maintain physical and virtual server environments, including on-premises and cloud-based Windows and Linux systems Manage and monitor backup systems, including scheduling, verification, and periodic recovery testing Administer Active Directory, Group Policy, identity management, and access controls Support and maintain network infrastructure, including firewalls, switches, and wireless systems Ensure systems are patched, up to date, and compliant with internal security standards Monitor systems for alerts and respond to incidents with proper documentation and resolution Serve as Tier 2/3 escalation support and assist with Tier 1 support as needed Manage and resolve tickets within SLA requirements with clear and accurate documentation Plan and execute infrastructure improvements and projects, including upgrades, deployments, and migrations Maintain system documentation, SOPs, diagrams, and inventory records Performance Expectations Demonstrates professionalism, integrity, and accountability in all responsibilities Takes ownership of assigned systems, tasks, and issues through to resolution without the need for follow-up Maintains consistent reliability in attendance, responsiveness, and daily operations Communicates clearly and effectively with technical and non-technical stakeholders Maintains a high level of accuracy, organization, and attention to detail Effectively prioritizes and manages multiple responsibilities in a fast-paced environment Proactively identifies risks, inefficiencies, and opportunities for improvement Contributes actionable recommendations and follows through on implementation Upholds security, compliance, and operational best practices across all systems Qualifications Bachelor's degree in Information Technology, Computer Engineering, or related field preferred, or equivalent experience/certifications 3+ years of experience in IT systems administration Strong experience with Windows Server, Active Directory, and endpoint management Strong understanding of networking fundamentals (VLANs, routing, policies, and subnetting) Experience troubleshooting complex infrastructure and system issues Strong documentation and organizational skills Technical Experience 2+ years of experience with Microsoft 365 administration (Entra, Intune, Defender, Azure) 2+ years of experience with virtualization platforms (Hyper‑V, VMware, Proxmox, etc.) Preferred Experience PowerShell scripting and task automation Experience with managing ERP systems (Infor Syteline) Enterprise network platforms (Cisco, Fortinet, Palo Alto, UniFi) VoIP systems (3CX, 8x8, or similar PBX solutions) Physical Requirements Ability to lift and transport IT equipment up to 50 pounds Ability to assemble, rack, and install hardware as needed Work Environment This position is on-site in Chattanooga, TN, with occasional travel to other company locations. This role may require participation in an on‑call rotation and occasional after‑hours work to support maintenance, upgrades, or critical incidents. Why Join S&P Air Control Work in a growing, multi‑site infrastructure environment Gain exposure to enterprise infrastructure, security, and cloud technologies Opportunity to contribute to process improvements and long‑term IT strategy #J-18808-Ljbffr