Linux System Administrator

Job Summary We are seeking an experienced Red Hat Linux System Administrator to support and sustain critical IT infrastructure within a classified environment. This role focuses on maintaining, securing, and enhancing enterprise Linux systems to ensure compliance with information assurance requirements and continuous operations. The position requires strong troubleshooting skills, adaptability, and a commitment to operational excellence, with occasional support outside normal business hours. Behavioral Competencies Strong customer focus with a positive, professional attitude Flexible and adaptable to changing priorities Effective troubleshooter and problem solver Quick learner with openness to new technologies Reliable and committed to mission success, including occasional after-hours support Ability to manage multiple priorities under pressure Commitment to following industry standards, best practices, and proper processes Job Responsibilities Install, configure, maintain, and administer Linux servers and networked systems Provide backup, recovery, file system, and disk space management services Perform performance tuning and network optimization Test and validate enterprise system software updates to ensure compatibility and minimize user impact Develop, maintain, and document technical processes, procedures, and system documentation Ensure compliance with security and information assurance requirements Develop and promote best practices for system administration, documentation, and templates Required Skills and Qualifications Active Top Secret clearance with immediate SCI eligibility Experience administering Red Hat Enterprise Linux (RHEL) 7/8 in a classified environment Knowledge of IntelliEarth Integrator software Experience with PostgreSQL database installation, configuration, and backups Knowledge of security operations, safeguards administration, and information assurance practices Network security certification (Security+ minimum or higher) Bachelors degree in Computer Science, Information Technology, or a related field with 5+ years of relevant experience, or 10+ years of relevant experience without a degree Desired Qualifications Experience with other Linux distributions such as CentOS or Rocky Linux Experience installing, configuring, and maintaining Apache, Tomcat, and other web servers using PKI infrastructure Experience with scripting and automation tools