Senior Systems Administrator

Senior Systems Administrator | Columbia, IL, United States | Hybrid | $92,300.00 - $166,850.00

We're hiring on behalf of a prominent leader in technology-enabled services and mission software, renowned for supporting critical defense and intelligence missions. This organization is dedicated to providing cutting-edge tools and technologies to address complex security challenges and protect vital assets. They foster an environment of innovation and expertise, seeking individuals who thrive in dynamic, mission-focused settings.

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 stringent security standards.
• Monitor and tune system performance, conduct root cause analysis, and resolve complex issues.
• Oversee and maintain automation scripts and infrastructure as code (e.g., Ansible, PowerShell, Bash).
• Provide Tier 2/3 technical support and contribute to system enhancement initiatives.

What You'll Need

• Bachelor’s degree in a relevant field with 8-12 years of progressive experience, or equivalent combination of education and 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).
• Significant experience with virtualization platforms and automation/scripting tools.
• Proficiency in Linux (Red Hat Enterprise Linux or CentOS) and Windows Server administration.
• Familiarity with secure system hardening, compliance standards, and support for classified environments.

What's On Offer

• Opportunity to work on mission-critical systems impacting national security.
• Collaborative environment with cross-functional teams (cybersecurity, network engineering, software development).
• Competitive salary and comprehensive benefits package.
• Professional development and advancement opportunities within a leading technology organization.

Apply via Haystack today!