Linux System Administrator

We are seeking a Linux-focused System Administrator (Level 2) to support a mission-critical program within the Intelligence Community. This role is responsible for the administration, security, and operational health of Linux-based infrastructure across virtualized, containerized, and classified environments. This position is fully onsite within a SCIF and requires an active TS/SCI with Full Scope Polygraph prior to consideration.

Responsibilities

• Administer and maintain Linux environments including RHEL, Rocky Linux, and CentOS
• Perform system hardening, patching, and performance tuning
• Apply and maintain DISA STIG configurations and remediate vulnerabilities
• Support System Security Plan (SSP) activities and RMF compliance requirements
• Conduct vulnerability assessments and support remediation efforts
• Manage PKI operations including certificate lifecycle and TLS configuration
• Install and support Secure Telephone Equipment and Network (STE/STN) infrastructure
• Deploy and manage containerized environments using Docker, Podman, Kubernetes, or OpenShift
• Administer virtual environments including VMware vSphere and KVM
• Manage storage systems including NAS, SAN, LVM, and distributed storage
• Configure and troubleshoot networking, firewalls, and system connectivity
• Provide Tier 1 and Tier 2 troubleshooting and operational support
• Maintain system documentation, configurations, and compliance artifacts

• Bachelor's degree in Information Technology, Computer Science, Cybersecurity, or related field or equivalent experience
• 5+ years of system administration experience in DoD or Intelligence Community environments
• Active TS/SCI clearance with Full Scope Polygraph required
• Strong Linux experience across RHEL, Rocky Linux, and or CentOS
• Experience with DISA STIGs and compliance tools such as SCAP
• Working knowledge of NIST 800-53 and RMF processes
• Experience supporting SSP, A&A, or ATO activities
• Hands-on experience with PKI, TLS, and cryptographic standards
• Experience with container platforms and virtualization technologies
• Strong networking fundamentals and firewall management experience
• DoD 8140 IAT Level II certification

Preferred Qualifications

• Experience with automation tools such as Ansible, Puppet, SaltStack, or Chef
• Proficiency in Bash and or Python scripting
• Experience with OpenShift in classified environments
• Familiarity with cross-domain solutions
• Experience with cloud environments such as AWS GovCloud or C2S
• Red Hat RHCSA or RHCE certification

Work Environment

• Fully onsite role in a SCIF at Fort Meade, MD
• Mission-focused, highly regulated environment
• Collaboration with engineering, security, and operations teams