Senior Systems Administrator

Senior Systems Administrator | Fairview Heights, IL, United States | Hybrid We're hiring for an organization that is a leader in technology-driven solutions, serving both government and commercial clients. This employer is known for driving innovation to provide efficient digital and mission-critical services, operating on a global scale and known for its commitment to advancing critical capabilities. The company is seeking a skilled professional to join its Intelligence Production Solutions Division. 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 industry security standards. • Monitor and tune system performance, conduct root cause analysis, and resolve complex issues efficiently. • Support backup, recovery, disaster recovery, and continuity of operations strategies. • Oversee and maintain automation scripts and infrastructure as code. • Collaborate with cybersecurity, network engineering, and software development teams. What You'll Need • Bachelor’s degree in a relevant technical field with 8-12 years of experience, or equivalent experience in lieu of a degree. • Active Top Secret clearance with the ability to obtain a TS/SCI with Polygraph. • DoD 8570 IAT Level II or III certification (e.g., Security+ CE, CASP+, CISSP). • Proven experience with Linux (RHEL/CentOS) and Windows Server system administration. • Proficiency with virtualization platforms like VMware and KVM. • Experience with automation and scripting tools (e.g., Ansible, Bash, PowerShell). • Familiarity with security compliance, system hardening, and RMF processes. What's On Offer • Opportunity to work on mission-critical systems supporting intelligence and geospatial initiatives. • Collaborative environment with diverse technical teams. • Potential for professional growth and engagement in system modernization. • Defined pay range of $92,300.00 - $166,850.00. Apply via Haystack today!