Senior Systems Administrator

Senior Systems Administrator | Madison, IL | Hybrid | $92,300.00 - $166,850.00 This employer is a globally recognised leader in technology-enabled services and mission software, dedicated to supporting defense and intelligence customers in a rapidly evolving security landscape. They foster an environment of innovation and require proactive professionals to ensure the success of critical initiatives. The Role • Lead system administration for Linux and Windows-based systems in secure, mission-critical environments. • Architect and manage complex server, storage, and virtualization infrastructure. • Perform OS installation, configuration, hardening, and patching in compliance with stringent government standards. • Monitor and tune system performance, conduct root cause analysis, and resolve complex issues. • Support backup, recovery, disaster recovery, and continuity of operations. • Oversee and maintain automation scripts and infrastructure as code. What You'll Need • US citizenship required; Active Top Secret clearance with ability to obtain TS/SCI with Polygraph. • Bachelor’s degree in a relevant field with 8-12 years of experience, or equivalent experience in lieu of degree. • DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP). • Experience with Linux (Red Hat/CentOS) and Windows Server administration. • Proficiency with virtualization platforms (VMware, KVM) and automation/scripting tools (Ansible, Bash, PowerShell). • Familiarity with STIG compliance and supporting IC or DoD classified environments. What's On Offer • Opportunity to work on mission-critical systems supporting national security initiatives. • Competitive compensation and comprehensive benefits package. • A collaborative environment with opportunities for professional growth and development. • Be part of a forward-thinking organisation that is redefining technological solutions. Apply via Haystack today!