Senior Systems Administrator

Senior Systems Administrator | Earth City, MO, United States | Hybrid | $92,300.00 - $166,850.00 This employer is a technology leader serving government and commercial customers with innovative digital and mission solutions. They are seeking a Senior Systems Administrator to join their mission-critical IT operations team within the Intelligence Production Solutions Division. This role demands deep technical expertise and proactive leadership to manage, secure, and optimize high-performance systems supporting intelligence and geospatial 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 (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, disaster recovery plans, and continuity of operations. • Oversee and maintain automation scripts and infrastructure as code (e.g., Ansible, PowerShell, Bash). What You'll Need • Bachelor’s degree in a relevant field with 8-12 years of experience, or equivalent experience in lieu of a degree. • Active Top Secret clearance required, with the ability to obtain TS/SCI with Polygraph. • DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP). • Experience with Linux (Red Hat Enterprise Linux or CentOS) and Windows Server administration. • Proficiency with virtualization platforms (VMware, KVM) and automation/scripting tools (Ansible, Bash, PowerShell, Python). • Familiarity with STIG compliance, system hardening, and security assessment processes. What's On Offer • Opportunity to work on mission-critical systems supporting national security initiatives. • Competitive compensation with a comprehensive benefits package. • Collaborative work environment with a focus on innovation and rapid pace. • Involvement in system enhancements and modernization projects. Apply via Haystack today!