Senior Systems Administrator

Senior Systems Administrator | Maryville, IL, United States | Hybrid Two line breaks after the header, then write a brief compelling summary (2-3 sentences max). We're hiring for a globally recognised technology leader that provides cutting-edge digital and mission innovations to government and commercial clients. This employer is known for its forward-thinking approach and commitment to tackling complex challenges through advanced technology. 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 quickly and efficiently. • 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 • US citizenship is required per contract. • Bachelor’s degree in Computer Science, Engineering, Information Technology, or related discipline and 8-12 years of prior relevant experience, or Master’s with 6-10 years of prior relevant experience. Additional years of experience in lieu of degree are acceptable. • 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 cloud platforms (AWS GovCloud, Azure Government) and hybrid cloud environments. • Experience with automation and scripting (Ansible, Bash, PowerShell, Python). What's On Offer • Competitive compensation package. • Health and Wellness programs. • Opportunities for professional growth and development. • Exposure to mission-critical projects in a secure environment. Apply via Haystack today!