Senior Systems Administrator

Senior Systems Administrator | St. Louis, MO, USA | Hybrid We're hiring on behalf of a leading technology and services provider that supports government and commercial customers with innovative digital and mission solutions. This organization is renowned for its commitment to advancing national security through advanced technology and a highly skilled workforce, operating in a fast-paced and mission-critical environment. The Role • Lead system administration for Linux and Windows-based systems within secure, mission-critical environments. • Architect and manage complex server, storage, and virtualization infrastructure, including VMware and KVM. • Perform OS installation, configuration, hardening, and patching in compliance with security standards and agency policies. • Monitor and tune system performance, conducting root cause analysis for complex issues. • Support backup/recovery strategies, disaster recovery plans, and continuity of operations. • Oversee and maintain automation scripts and infrastructure as code using tools like Ansible, PowerShell, and Bash. What You'll Need • US citizenship required per contract; Active Top Secret clearance with the 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 a degree. • DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP). • Experience with cloud platforms (AWS GovCloud, Azure Government) and Linux/Windows Server administration. • Proficiency with virtualization platforms (VMware, KVM) and automation/scripting tools. • Familiarity with STIG compliance, system hardening, and RMF processes. What's On Offer • Competitive salary range: $92,300.00 - $166,850.00. • Comprehensive benefits package including health and wellness programs, income protection, paid leave, and retirement plans. • Opportunity to work on mission-critical projects directly impacting national security. • Professional development and growth opportunities within a respected industry leader. Apply via Haystack today!