Linux Administrator

Description 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.