Senior Systems Administrator

Senior Systems Administrator | East Saint Louis, IL | Hybrid | $92,300.00 - $166,850.00 This employer is a leading technology solutions provider for government and commercial sectors, recognized for delivering innovative digital and mission capabilities. They are seeking a highly skilled Senior Systems Administrator to join a team focused on mission-critical intelligence and geospatial initiatives within secure, high-performance environments. 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 DoD STIGs and agency policies. • 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 (Ansible, PowerShell, Bash, etc.). What You'll Need • Bachelor’s degree in a relevant field with 8-12 years of experience, or equivalent experience in lieu of 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). • 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 RMF processes. What's On Offer • Opportunity to work on mission-critical projects supporting national security initiatives. • Competitive compensation package with a defined pay range. • Comprehensive benefits including health, wellness, income protection, paid leave, and retirement. • Collaborative team environment focused on innovation and outperforming the status quo. Apply via Haystack today!