Senior Systems Administrator

Senior Systems Administrator | National Stock Yards, IL, United States | Hybrid | $92,300.00 - $166,850.00 This employer is a respected leader in technology-enabled services and mission software solutions, supporting defense and intelligence customers. They are dedicated to providing critical tools and technologies to navigate an evolving security landscape and protect vital assets. This is an opportunity to join a team focused on delivering advanced intelligence and geospatial initiatives. The Role • Lead system administration for both Linux and Windows-based systems within secure, mission-critical environments. • Architect, manage, and maintain complex server, storage, and virtualization infrastructure (VMware, KVM). • Ensure OS installation, configuration, hardening, and patching comply with relevant security standards and policies. • Monitor and tune system performance, perform root cause analysis, and efficiently resolve complex issues. • Oversee backup/recovery strategies, disaster recovery planning, and continuity of operations. • Develop and maintain automation scripts and infrastructure as code using tools like Ansible, PowerShell, and Bash. What You'll Need • Bachelor’s degree in a relevant technical field with 8-12 years of experience, or equivalent experience in lieu of a degree. • Active Top Secret clearance, with the ability to obtain TS/SCI with Polygraph. • DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP). • Demonstrated experience with Linux (RHEL/CentOS) and Windows Server administration. • Proficiency in virtualization platforms (VMware, KVM) and automation/scripting (Ansible, Bash, PowerShell, Python). • Familiarity with STIG compliance, system hardening, ACAS scans, and RMF processes. What's On Offer • Competitive salary range of $92,300.00 - $166,850.00. • Opportunity to work on mission-critical systems supporting national security initiatives. • Collaborative environment with cybersecurity, network engineering, and software development teams. • Professional development and the chance to lead modernization efforts. Apply via Haystack today!