Senior Systems Administrator

An established organization is seeking an experienced Senior Systems Administrator to support and enhance enterprise IT infrastructure. This role is responsible for the stability, security, and performance of on‑premise and cloud‑based systems and will play a key role in infrastructure planning, operational support, and continuous improvement initiatives.

• Manage the day‑to‑day administration and lifecycle of servers, virtualization platforms, cloud environments, and supporting infrastructure
• Support and maintain Active Directory services, including Group Policy, DNS, DHCP, and authentication mechanisms
• Apply security patches, system updates, and infrastructure enhancements across environments
• Design, implement, and maintain system monitoring, alerting, and reporting solutions
• Identify, remediate, and proactively prevent system and security vulnerabilities
• Provide on‑call and after‑hours support for production systems as required
• Participate in infrastructure planning, annual budgeting, project scheduling, and application roadmap initiatives
• Ensure systems remain compliant with internal standards, licensing requirements, and applicable regulations
• Work closely with third‑party vendors and technology partners to evaluate and implement solutions
• Maintain, test, and document disaster recovery and business continuity plans

• Bachelor’s degree in Computer Science, Information Technology, or a related discipline, or equivalent professional experience
• Minimum of 5 years of experience in enterprise systems administration
• At least 3 years of hands‑on experience supporting virtualization platforms such as VMware, Hyper‑V, Citrix, Nutanix, or Linux KVM
• Strong experience with Active Directory, DNS, DHCP, Group Policy, and enterprise email systems
• Experience administering Microsoft 365 services including Intune, Autopilot, Exchange Online, and SharePoint Online
• Working knowledge of cloud platforms such as Microsoft Azure and AWS
• Experience supporting Linux‑based systems
• Proven troubleshooting, analytical, and communication skills
• Ability to work independently, prioritize workloads, and manage multiple initiatives simultaneously

• Windows Server operating systems
• Oracle Linux and Oracle Linux Virtualization Manager
• Enterprise storage solutions
• Backup and disaster recovery platforms

• Mid‑Senior level

• Full‑time

• Information Technology
• Staffing and Recruiting