DoD Linux System Administrator — Enterprise Security

Tech(X)- Techximius Corp; Aberdeen (MD); On-site; USD 90,000 - 100,000; Full time

Job summary

Tech(x) is seeking a skilled Linux System Administrator to support mission-critical systems in a technical lab environment. The role focuses on securing, administering, and optimizing enterprise Linux systems for Army and DoD network operations.

You will contribute to system hardening, vulnerability assessment activities, and enterprise service support across a complex, multi-domain environment. This is an on-site role in Aberdeen, MD.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, Mathematics, or related technical field.
• 4+ years of relevant experience in lieu of degree.
• 3–7 years of hands-on Linux system administration experience.

Responsibilities

• Manage and maintain C5ISR Linux DNS services and enterprise baselines (CentOS).
• Develop, implement and maintain secure system configurations and patch management processes.
• Support network vulnerability assessments with cybersecurity teams.
• Provide system administration, security, and enterprise deployments.
• Administer enterprise infrastructure services including SAN; Windows systems as needed.
• Monitor system performance, ensure availability, and troubleshoot issues.
• Develop and maintain backup and recovery procedures.
• Ensure compliance with DoD cybersecurity and authorization requirements.
• Collaborate with cross-functional engineering and operations teams.
• Other duties as assigned.

Skills

TCP/IP networking

System security

Server configuration

Monitoring & maintenance

Configuration management

PKI in DoW

Communication of technical concepts

Imaging & patch migration (Ghost to S/

PXE imaging

VMware vCenter

Enterprise/tactical networks

Education

Bachelor’s degree in Computer Science, Engineering, Mathematics, or related technical field

4+ years of relevant experience in lieu of degree

3–7 years of hands‑on Linux system administration

Tools

VMware vCenter

Microsoft Windows (enterprise)

Symantec Ghost to MECM imaging

Job description

Tech(x) is seeking a skilled Linux System Administrator to support mission-critical systems in a technical lab environment. The role focuses on securing, administering, and optimizing enterprise Linux systems for Army and DoD network operations.

You will contribute to system hardening, vulnerability assessment activities, and enterprise service support across a complex, multi-domain environment. This is an on-site role in Aberdeen, MD.