Lead Classified Systems Administrator

Overview

Lead Classified Systems Administrator in Beavercreek, OH. This role serves as the technical lead for a large, complex classified infrastructure with a focus on Red Hat Enterprise Linux (RHEL) administration, security, and modernization. The candidate will be the Linux subject matter expert responsible for maintaining, optimizing, troubleshooting, and securing mission-critical systems across a broad enterprise environment. The role includes providing technical leadership for Linux-based platforms, guiding infrastructure improvements, supporting integrated Windows services, mentoring system administrators, and partnering with cybersecurity, network, and engineering teams in a highly regulated environment.

• Lead the administration, maintenance, and optimization of enterprise systems, including servers, desktops, storage devices, and peripheral equipment.
• Serve as the technical lead and primary escalation point for complex system, infrastructure, and performance issues.
• Oversee OS and software upgrades, patching strategies, and lifecycle management to maintain a secure and compliant environment.
• Provide hands-on support for advanced troubleshooting across Windows, Linux, and integrated environments.
• Coordinate and prioritize team activities, ensuring timely execution of operational tasks and project deliverables.
• Design, implement, and lead infrastructure improvements, system enhancements, and modernization initiatives.
• Manage and validate backup, recovery, and disaster recovery processes to ensure business continuity.
• Monitor system performance, identify risks, and proactively implement security and optimization measures.
• Collaborate with network, cybersecurity, and IT support teams to support enterprise-wide initiatives and system integrations.
• Partner with vendors and third-party providers to resolve complex issues and support system enhancements.
• Provide clear communication and status updates to stakeholders, leadership, and customers.
• Develop, standardize, and improve system administration processes, procedures, and documentation.
• Mentor and guide junior administrators, fostering technical growth and best practices across the team.

• B.S. Degree in Computer Science, Information Technology, Systems Engineering, or related field (additional relevant experience may be accepted in lieu of a degree).
• 8+ years of relevant experience, including 5+ years as a primary Linux Systems Administrator supporting large-scale enterprise or DoD environments.
• Citizenship & Clearance:
  Must be a US Citizen with TS/SCI Clearance with a CI Polygraph or the ability to obtain and maintain.
• Certifications:
  
  CompTIA Security+ CE, CISSP, or IAW DoD 8570 certifications.
• Technical Expertise:
  Advanced hands-on Linux system administration (RHEL), lifecycle management, patching, security hardening, performance tuning, and troubleshooting in enterprise production environments.
• Experience administering enterprise Linux environments and supporting mission-critical systems across deployment, maintenance, upgrades, and incident resolution.
• Experience implementing and maintaining Linux security controls, including STIG compliance, vulnerability remediation, auditing, and system hardening in DoD or other regulated environments.
• Experience with Linux scripting and automation tools (Bash, Python, Ansible, or similar).
• Experience supporting integrated Windows environments (Windows Server, Active Directory, Group Policy).
• Strong experience with virtualization (VMware) and enterprise storage and backup solutions.
• Proven ability to design, evaluate, and implement IT infrastructure solutions in complex environments; strong troubleshooting and performance tuning skills.
• Demonstrated expertise administering RHEL in large-scale enterprise environments, including patch management, security, and automation.

• Experience with cybersecurity hardening tools such as STIG Viewer, SCAP Compliance Checker, and OpenSCAP.
• Familiarity with DoD RMF and configuring systems for DoD Special Access Programs per JSIG requirements.
• Hands-on experience with machine virtualization, including transitioning legacy products to virtualized environments.
• Experience with vulnerability scanning tools and mitigation strategies.
• Knowledge of advanced security practices and compliance standards in government or defense IT environments.
• Experience leading small teams or projects with significant complexity and risk.

• Compensation:
  May include bonuses, sign-on bonuses, relocation benefits, or incentives as per internal policy or contractual designation.
• Benefits:
  Competitive benefits including 401(k) with company match, medical, dental, vision, life insurance, AD&D, FSA, disability, PTO, and flexible work options.
• Equal Opportunity: K  is an equal opportunity employer; all qualified applicants will receive consideration without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age,…