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.
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