Linux Engineer (Classified Environment)

About the role

The Field Intelligence Operations Division (FIOD) of the National Security Directorate (NSSD), is seeking an exceptional Linux Engineer to help design, build, and advance the secure computing environments behind some of the nation’s most consequential national security, intelligence, and scientific missions.

Responsibilities

• Engineer and modernize secure Linux infrastructure supporting classified national security, intelligence, scientific, HPC, and emerging mission environments, primarily using Red Hat Enterprise Linux (RHEL) and related distributions.
• Design, build, configure, optimize, and sustain physical and virtual Linux platforms across multiple security domains.
• Develop automation using Ansible, Python, Bash, and Git-based workflows to improve deployment, configuration, patching, compliance, reliability, and operational efficiency.
• Implement cybersecurity requirements including RMF, NIST 800-53, STIGs, DOE directives, and ICD 503, including system hardening, vulnerability remediation, monitoring, and secure logging.
• Integrate Linux environments with enterprise identity, virtualization, storage, backup, and monitoring capabilities, including Active Directory, LDAP, Kerberos, PKI, VMware, and KVM.
• Troubleshoot complex technical issues and partner with cybersecurity, networking, storage, application, HPC, and mission teams to develop secure, scalable solutions.
• Evaluate and introduce new technologies, architectures, and engineering approaches that advance infrastructure modernization and emerging mission capabilities.
• Support mission-critical operations, planned maintenance, and occasional after-hours requirements.

Qualifications

• BS degree in a related technical field and at least five years of Linux engineering or administration experience.
• Current Top-Secret clearance with Q and SCI eligibility.
• Demonstrated expertise with RHEL/Linux engineering, troubleshooting, performance tuning, automation, and scripting.
• Experience with Ansible, Python, Bash, enterprise virtualization, identity integration, storage, monitoring/logging, and cybersecurity compliance.
• Strong analytical and problem-solving skills with the ability to independently solve complex technical challenges and collaborate across multidisciplinary teams.

Preferred Qualifications

• Experience in one or more of the following: Classified, Intelligence Community, DoD, DOE, or other highly regulated computing environments.
• HPC, AI/ML infrastructure, GPU computing, containers, Kubernetes, or advanced computing platforms.
• Infrastructure-as-code, advanced automation, CI/CD, or enterprise configuration management.
• Enterprise virtualization, storage, backup, and disaster-recovery architectures.
• RMF, NIST 800-53, STIG implementation, vulnerability management, or authorization activities.
• Designing or modernizing enterprise Linux environments and introducing emerging technologies.
• Relevant Linux, automation, cybersecurity, virtualization, or cloud certifications.