Systems Administrator; Unix​/Linux - Security Clearance

EPS Corporation is seeking a highly skilled Senior Systems Administrator (Unix/Linux) to support enterprise-level networks and systems within a secure and mission-critical environment. The ideal candidate will bring deep expertise in Unix/Linux administration, network security, and performance optimization, ensuring system reliability, security, and efficiency.

• Administer, maintain, and support Unix/Linux operating systems, networks, and software applications.
• Perform system installation, configuration, and integration of hardware, operating systems, and COTS software.
• Manage system backups, recovery procedures, and disaster recovery operations to ensure data integrity and availability.
• Conduct system performance monitoring, tuning, and optimization to maintain operational efficiency.
• Implement and maintain security configurations, access controls, and vulnerability management in accordance with DoD and company standards.
• Troubleshoot hardware, software, and network issues, identifying root causes and implementing corrective actions.
• Manage system resources, user accounts, file systems, and library structures.
• Support and enforce network security policies, including the use of firewalls and intrusion detection/prevention systems.
• Stay current on emerging cyber threats, attack methods, and detection tools to ensure proactive defense.

• ACTIVE TOP SECRET (3) years of professional experience in Unix and/or Linux system administration of networks and software systems.
• Hands‑on experience in:
• System backup and recovery
• Software and security management
• Hardware installation and configuration
• Performance tuning and troubleshooting
• Network administration using protocols such as TCP/IP
• Experience with major network security tools such as firewalls, IDS/IPS, and vulnerability assessment tools.
• Knowledge of computing and networking vulnerabilities, attack vectors, and mitigation/detection methods.
• Must meet DoD 8570 IAT Level III certification requirements (e.g., CISSP, CASP+, or equivalent).
• Must possess an active T5 investigation (Top Secret eligibility or higher).
• Strong analytical, problem‑solving, and documentation skills.

• Experience with automation and configuration management tools (e.g., Ansible, Puppet, Chef).
• Familiarity with cloud or virtualized environments (e.g., VMware, AWS, Azure).
• Knowledge of STIG compliance, RMF, or other DoD cybersecurity frameworks.

• EPS Corporation is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.
• Type of Security Clearance Required Top Secret.