Linux Administrator - Secret Clearance Required

Salary

$119,000 - $161,000

Regular

Must currently possess Secret clearance. Must be able to obtain Secret clearance.

None

IT Infrastructure and Operations

We are seeking a Linux Administrator to support the Infrastructure Management Monitoring Team in Falls Church, Virginia. This role is critical to maintaining and supporting Linux operating systems. The ideal candidate is a proactive problem solver who thrives in a dynamic, mission‑driven environment and can engage confidently with senior military and government leadership.

• Provide system administration support for Linux operating systems including installing software, applying patches, managing file systems, monitoring performance, and troubleshooting alerts from monitoring tools.
• Analyze and resolve problems associated with the operating system, servers, hardware, and applications software. Detect, diagnose, and report related problems on servers, including system failure analysis and recovery, ensuring consistency and integrity of file systems.
• Utilize in‑depth hardware configuration knowledge, shell programming expertise, and solid understanding of standard concepts, practices, and procedures. Relies on experience and judgment to plan and accomplish goals, perform a variety of tasks, and work under general supervision.
• Responsible for daily monitoring of interface programs between multiple enterprise systems; review daily logs and ensure successful completion.
• Perform incremental and full cold backups/patching.
• Responsible for DoW Linux Security Technical Implementation Guides (STIGs).
• Provide performance metrics and usage charts, including CPU usage, disk usage and network uptime for the Linux servers.
• Provide general maintenance, upgrades, and new installation of servers and coordinate with data center personnel to execute. Document and generate business processes for day‑to‑day and emergency support procedures.
• Install, test, and verify Linux security patches; coordinate, document requirements and timelines, and work closely with service owners.
• Perform systems security administration functions, including creation and maintenance of customer profiles and accounts.
• Responsible for creating and/or maintaining standard operating procedures for the Linux documentation library.
• Implement, configure, update, and maintain Ansible servers and scripts.
• Implement, configure, update, and maintain STIG Manager servers and scripts.
• Implement, configure, update, and maintain the Linux operating system firewall.
• Experience in handling NFS, CIFS, and SMB permissions.

• High school diploma or AA. Preferred – Bachelor’s degree in information technology, computer science or a related technical discipline, or equivalent combination of education, technical certifications or training, or work experience.

• 6+ years of related experience.
• 8+ years of overall demonstrated experience as a RHEL 7 and/or RHEL 8 server administrator.

• Experience administering RHEL 7/8 Linux servers and applying Linux best practices.
• Strong Linux administration skills with knowledge of enterprise network architectures.
• Hands‑on experience with automation/configuration tools (Ansible, Puppet, Chef).
• Skilled in scripting for automation (Bash, Ruby, Python, Perl).
• Solid understanding of Linux internals (system calls, file systems, processes).
• Working knowledge of TCP/IP and related protocols (HTTP, FTP, NFS).
• Experience using Power Shell for task automation.
• Excellent problem‑solving, analytical, and decision‑making skills.
• Reliable and responsive, consistently meeting expectations and following direction.
• Strong customer service skills; able to engage senior military and government leaders.
• Capable of presenting ideas clearly in briefings, meetings, and leadership interactions.
• Capable of delivering training sessions as needed.
• Experienced in coordinating with stakeholders to meet deadlines and objectives.
• Excellent communication and documentation abilities.
• Strong organizational, collaborative, and team‑oriented mindset.
• Able to quickly absorb information and self‑learn new requirements.
• Mai…