Linux System Administrator

Job Responsibilities

• Administer, maintain, and optimize enterprise Linux systems in a production environment.
• Manage and support IBM Enterprise Storage solutions to ensure high availability and performance.
• Configure, monitor, and troubleshoot Veritas NetBackup for enterprise backup and recovery operations.
• Perform Linux system patching and package management using YUM repositories.
• Execute vulnerability scans using Nessus and remediate findings to maintain compliance with organizational security standards.
• Support and maintain STE/STIN processes and environments.
• Implement and maintain Linux security configurations, system hardening, and NSF security frameworks and policies.
• Maintain system health, performance, and availability while identifying opportunities for optimization.
• Troubleshoot system issues and perform root cause analysis to ensure reliable operations.
• Collaborate with cross-functional teams to support infrastructure upgrades, audits, and incident response activities.
• Develop and maintain system documentation, operational procedures, and compliance documentation.
• Perform system optimization, performance tuning, and capacity planning.
• Conduct routine health checks and proactively identify potential risks, issues, and improvement opportunities.

Minimum Requirements

• Active TS/SCI clearance with Polygraph required.
• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent experience).
• Three (3) or more years of Linux system administration experience supporting Red Hat Enterprise Linux (RHEL), CentOS, or similar Linux distributions.
• Experience administering IBM Enterprise Storage systems.
• Strong knowledge of Veritas NetBackup administration.
• Experience with Nessus vulnerability scanning and remediation.
• Proficiency with YUM package management and Linux patching strategies.
• Familiarity with STE/STIN processes and NSF-related security frameworks.
• Strong understanding of Linux security, system hardening, and compliance best practices.
• Experience with Bash, Python, or similar scripting languages.
• Strong troubleshooting, analytical, and problem-solving skills.

Preferred Qualifications

• Red Hat Certified System Administrator (RHCSA) certification or equivalent.
• Experience supporting enterprise environments with high availability and disaster recovery requirements.
• Experience with automation tools such as Ansible, Puppet, or similar configuration management platforms.
• Exposure to cloud or hybrid infrastructure environments.