Senior Systems Administrator - Linux/Windows & Automation

Njvc LLC; San Antonio, Northern (TX, KY); Hybrid; USD 85,000 - 105,000; Full time

Job summary

Chenega MIOS is seeking a Systems Administrator to lead administration, maintenance, and optimization of enterprise Windows and Linux server environments in a DoD-aligned security context. The role emphasizes vulnerability management, patching, and incident response across virtual and physical infrastructures.

Responsibilities include automation with Bash/Ansible, system hardening per DISA STIGs, and collaboration with cross-functional teams to ensure reliability and security of mission-critical

Qualifications

• Associates degree in IT, Computer Science, Information Systems, Engineering, or related technical discipline.
• 5+ years of relevant experience.
• Experience with Windows and Linux operating systems.
• DOD IAT Level II Certification is required.
• DOD Top Secret clearance with SCI eligibility.

Responsibilities

• Lead the administration, maintenance, and optimization of enterprise Windows and Linux server environments.
• Install, configure, harden, maintain, and troubleshoot RHEL/Ubuntu/Windows Server across physical and virtual environments.
• Perform vulnerability remediation and system-hardening per DISA STIGs and DoD cybersecurity requirements.
• Develop and maintain backup, recovery, and disaster recovery capabilities for enterprise systems.
• Automate system administration using Bash, Ansible, PowerShell, and related tools.

Skills

Windows and Linux OS experience

DOD IAT Level II Certification

DOD Top Secret clearance w/ SCI

5+ years of relevant experience

Education

Associates degree in information technology or related field

Job description

Chenega MIOS is seeking a Systems Administrator to lead administration, maintenance, and optimization of enterprise Windows and Linux server environments in a DoD-aligned security context. The role emphasizes vulnerability management, patching, and incident response across virtual and physical infrastructures.

Responsibilities include automation with Bash/Ansible, system hardening per DISA STIGs, and collaboration with cross-functional teams to ensure reliability and security of mission-critical