Senior Systems Administrator

Senior Systems Administrator | Bridgeton, MO, United States | Hybrid This employer is a respected leader in technology-enabled services and mission software, providing critical support to defense and intelligence customers. They are known for their commitment to innovation and ensuring clients have the tools necessary to navigate complex security landscapes and protect vital assets. The organization fosters a dynamic environment where proactive leadership and deep technical expertise are highly valued. 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 (VMware, KVM). • Perform OS installation, configuration, hardening, and patching in compliance with security standards. • Monitor and tune system performance, conduct root cause analysis, and resolve complex issues. • Support backup/recovery strategies and disaster recovery plans. • Oversee and maintain automation scripts and infrastructure as code. What You'll Need • US citizenship required. • Bachelor’s degree in a relevant field and 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. • Experience with Linux and Windows Server platform system administration. • Proficiency with virtualization platforms (VMware, KVM) and automation/scripting tools. What's On Offer • Opportunity to work on mission-critical systems for defense and intelligence sectors. • Competitive compensation package. • Comprehensive benefits including health, wellness, and retirement programs. • Chance to mentor junior administrators and lead system enhancements. Apply via Haystack today!