Senior Systems Administrator

Senior Systems Administrator | Saint Louis, MO, United States | Hybrid | $92,300.00 - $166,850.00 This employer is a respected leader in the technology and government services sector, known for its innovative solutions and commitment to national security missions. They are seeking a skilled Senior Systems Administrator to join a dynamic team focused on optimizing mission-critical infrastructure for intelligence initiatives. This role offers a unique opportunity to work on advanced projects within a secure, collaborative environment. 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 security standards. • Monitor 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 solutions. What You'll Need • Bachelor’s degree in a relevant field or equivalent years of experience. • 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 (RHEL/CentOS) and Windows Server administration. • Proficiency with virtualization platforms (VMware, KVM) and automation tools (Ansible, Bash, PowerShell). • Familiarity with STIG compliance, system hardening, and RMF processes. What's On Offer • Competitive salary range. • Comprehensive health and wellness programs. • Generous paid leave and retirement benefits. • Opportunities for professional growth and development within a mission-focused organization. Apply via Haystack today!