Systems Administrator, Senior - Secret Clearance

Systems Administrator, Senior - Secret Clearance

On-site in Mobile, AL

The Systems Administrator, Senior manages and optimizes complex enterprise infrastructure spanning Windows and Linux servers, VMware environments and cloud services that support mission-critical government systems. The role leads major changes, automation and incident response while keeping performance, availability and security within organizational and regulatory requirements. Travel up to 10%.

Responsibilities:

• Administer heterogeneous server platforms and virtualization stacks (for example, VMware vSphere) for highly available workloads.
• Plan, test and execute complex system changes such as OS upgrades, hypervisor updates and configuration refactoring, with clear rollback strategies and minimal downtime.
• Design and tune monitoring, logging and alerting to give deep visibility into system performance, capacity and security posture across on-premises and cloud environments.
• Use scripting and automation (for example, PowerShell, Bash, Python) to standardize provisioning, configuration, patching and recurring operational tasks.
• Implement and enforce security hardening, access controls, and backup and recovery procedures aligned with organizational and regulatory requirements.
• Lead high-severity incident response, coordinate root-cause analysis, and drive long-term remediation and preventive improvements.
• Mentor junior staff, contribute to infrastructure roadmaps, and work within ITIL-aligned incident, problem and change processes.

Requirements:

• Bachelor's degree in IT, Computer Science or a related field, or equivalent experience.
• Typically 8 or more years of experience in systems administration for Windows, Linux or VMware environments in enterprise or government settings.
• Deep knowledge of operating systems (for example, Windows Server, Red Hat or similar) and VMware vSphere/ESXi.
• Proficiency in scripting, system monitoring, patch management and performance tuning.
• Strong troubleshooting, communication and teamwork skills, with the ability to manage multiple complex efforts.
• Current Secret security clearance.
• Security+ or other DoD IAT-II compliant certification.
• U.S. citizenship required.

Preferred:

• Relevant certifications such as Microsoft Windows Server, RHCSA/RHCE or VMware VCP.
• Experience applying ITIL practices and working in highly regulated federal environments.

Compensation: $80,100 - $110,000 per year

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