The Linux Administrator provides administration, security hardening, maintenance, and operational support for Linux-based systems within a Department of Defense (DoD) environment. The position is responsible for maintaining secure, reliable, and compliant Linux infrastructure while supporting day-to-day operations, vulnerability remediation, system patching, and DoD cybersecurity requirements
Responsibilities:
Install, configure, administer, and maintain Linux servers, including Red Hat, Ubuntu, and CentOS environments. Secure Linux systems in accordance with DoD cybersecurity requirements, security policies, and industry best practices. Apply, validate, and remediate applicable DISA Security Technical Implementation Guides (STIGs). Perform operating system and security patching, system updates, and vulnerability remediation. Review vulnerability scan results, investigate findings, and implement corrective actions to maintain system compliance. Monitor system performance, availability, capacity, and security using appropriate monitoring and management tools. Troubleshoot and resolve operating system, application, configuration, performance, and connectivity issues. Manage user accounts, groups, permissions, privileged access, and access controls. Configure and maintain Linux-hosted services, including web servers, databases, file systems, and related infrastructure services. Implement and maintain backup, recovery, and disaster recovery capabilities. Automate routine system administration and maintenance activities using scripting languages such as Bash, Perl, and Python. Support application and infrastructure deployments and collaborate with DevOps, engineering, cybersecurity, and development teams. Maintain system documentation, configuration records, standard operating procedures, and technical documentation. Support configuration management, audit logging, security monitoring, and other controls required to maintain secure DoD computing environments. Ensure systems remain compliant with applicable DoD security policies, technical standards, and approved configuration baselines. . Knowledge of and experience with installation, configuration, and integration, backups, troubleshooting, and problem resolution for servers associated with an Active Directory domain, such as
DHCP and DNS Requirements:
Target Requirements:
Bachelor's degree in Computer Science, Information Technology, Cybersecurity, Engineering, or a related technical discipline. Six (6) years of relevant professional experience administering and supporting Linux systems. Demonstrated experience securing and hardening Linux systems. Experience applying and validating DISA STIGs and remediating associated findings. Experience with Linux operating system patching, vulnerability remediation, and configuration management. Working knowledge of Linux system administration, access controls, system monitoring, backup/recovery, and troubleshooting. Experience with automation and scripting using Bash, Perl, and Python, or similar technologies.
