Linux System Administrator

CDIT is a technology solutions company supporting government and national security customers with secure, mission-focused IT solutions. We partner with highly skilled technical professionals to support complex environments where reliability, security, and operational excellence are critical. Our team values technical expertise, collaboration, and a commitment to supporting the missions of our customers.

CDIT is seeking an experienced Linux System Administrator to support a secure, mission-critical enterprise environment. This role will be responsible for the administration, maintenance, performance, and security of Linux-based infrastructure, with a focus on IBM Enterprise Storage, Veritas NetBackup, vulnerability management, system patching, and security compliance. The ideal candidate will bring strong hands-on Linux administration experience with the ability to troubleshoot complex infrastructure issues, optimize system performance, and support highly available environments.

Responsibilities

• Administer, maintain, and optimize Linux-based systems in a production environment.

• Manage and support IBM Enterprise Storage solutions, ensuring availability and performance.

• Configure, monitor, and troubleshoot Veritas NetBackup for enterprise backup and recovery operations.

• Perform system patching and package management using YUM repositories.

• Execute and remediate vulnerability scans using Nessus, ensuring compliance with applicable security standards.

• Support and maintain STE/STIN processes and environments.

• Implement and maintain system security configurations, including applicable NSF frameworks and policies.

• Perform routine system health checks and optimize performance, availability, access controls, and security.

• Support system optimization, performance tuning, and capacity planning.

• Proactively identify and troubleshoot potential system issues, risks, and operational roadblocks.

• Collaborate with infrastructure, security, and technical teams on system upgrades, audits, incident response, and operational requirements.

• ​Maintain system configurations, procedures, and compliance documentation.

##

Requirements

Required Skills & Qualifications

• 3+ years of hands-on Linux System Administration experience with RHEL, CentOS, or similar.

• Experience with IBM Enterprise Storage systems.

• Strong knowledge of Veritas NetBackup administration.

• Experience with Nessus vulnerability scanning and remediation.