IT Systems Administrator
4 days ago
Orange Park
Job Summary The IT Systems Administrator is responsible for the availability, performance, security, and maintenance of on-premises and cloud systems. This role manages servers, storage, networks, and core services (e.g., Active Directory, identity, email), while providing Tier 2/3 support, automating routine tasks, and ensuring compliance with organizational and regulatory standards. Key Responsibilities • Administer, monitor, and maintain Windows/Linux servers, virtualization platforms and cloud services (e.g., Microsoft 365/Azure)., • Manage identity and access (Active Directory, Azure AD/Entra ID), group policies, single sign-on (SSO), and MFA., • Maintain core infrastructure: DNS, DHCP, file/print services, certificate services, IIS/Apache, and backup/restore systems., • Implement patching, configuration management, and system hardening; maintain OS and application currency., • Monitor capacity, performance, and availability; remediate incidents and root causes; document post-incident reviews., • Administer networking fundamentals: VLANs, routing, firewalls, VPN, Wi‑Fi; collaborate with network engineers on changes., • Own backup, disaster recovery, and business continuity plans; perform regular tests and validate RPO/RTO targets., • Secure systems in alignment with best practices; manage endpoint protection, EDR/XDR, logging, SIEM integrations, and least‑privilege., • Manage licenses, asset inventory, and lifecycle (procurement, build, deployment, decommission)., • Create and maintain documentation: diagrams, runbooks, SOPs, and knowledge base articles., • Provide Tier 2/3 support, mentor service desk staff, and coordinate vendor escalations., • Participate in change management; plan and execute maintenance windows and upgrades., • Contribute to audits & compliance and remediate findings., • Support project delivery: requirements, design, testing, cutover, and post‑implementation validation. Qualifications Education: • Associate or Bachelor’s degree in Information Technology, Computer Science, or related field (preferred)., • Microsoft Certified: Windows Server Hybrid Administrator Associate; Microsoft 365/Azure Administrator Associate., • CompTIA Server+, Network+, Security+; ITIL Foundation., • VMware VCP, AWS SysOps Administrator, or similar platform certifications. Experience: • 3–5+ years administering Windows/Linux servers, virtualization, storage, and core services., • Hands‑on experience with Microsoft 365/Azure (Exchange Online, SharePoint/OneDrive, Intune/Endpoint Manager)., • Practical knowledge of networking (TCP/IP, DNS, DHCP, VLANs, routing, VPNs, firewalls)., • Scripting/automation experience (PowerShell and/or Bash)., • Working knowledge of security controls, hardening benchmarks, patching, backup/restore, and DR/BCP. Skills & Competencies • Strong troubleshooting and root‑cause analysis; ability to interpret logs and performance metrics., • Excellent documentation, communication, and stakeholder management skills., • Ability to prioritize, manage concurrent projects, and operate during maintenance windows., • Security‑first mindset with attention to least privilege, segmentation, and monitoring. Tools/Technology Stack • Windows Server, Linux (Ubuntu/CentOS/RHEL), Active Directory, Azure AD/Entra ID., • VMware vSphere/ESXi or Microsoft Hyper‑V; SAN/NAS storage., • Microsoft 365 (Exchange Online, SharePoint, OneDrive), Intune/Endpoint Manager., • PowerShell, Bash, Ansible; configuration and patch management tools (e.g., WSUS/SCCM)., • Monitoring/alerting (e.g., Nagios, Zabbix, PRTG, Azure Monitor), SIEM (e.g., Splunk, Sentinel)., • Backup solutions (e.g., Veeam, Commvault), ticketing (ServiceNow/Jira). Work Environment • Standard business hours with occasional after-hours support for critical issues, • Office-based with remote support, • Ability to travel domestically, • Ability to lift/move equipment up to 25–40 lbs; occasional travel to sites or data centers.