System Administrator - TS/SCI
Listed on 2026-09-16
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IT/Tech
Cybersecurity, Unix/Linux
Top Secret/SCI with Active Full Scope Polygraph – must be active prior to start
100% Onsite near Washington, DC
Pay: $/hour W2 only.
Duration: 5 yrs
We are seeking an experienced Linux-focused System Administrator to support a mission-critical program within the Intelligence Community. This is an on-site position in a Sensitive Compartmented Information Facility (SCIF) environment requiring a TS/SCI clearance with an active Full Scope Polygraph prior to consideration. The successful candidate will be responsible for the day-to-day administration, security compliance, and operational health of complex Linux-based infrastructure spanning virtualized environments, container platforms, and classified networked systems.
The Systems Administrator operates with a high degree of independence and serves as a technical authority on Linux systems engineering, PKI/cryptographic policy enforcement, storage management, IP networking, and security compliance. This role carries significant responsibility for System Security Plan (SSP) maintenance, STIG implementation, and supporting Secure Telephone Equipment/Network (STE/STN) infrastructure within a heavily regulated RMF/NIST framework.
QUALIFICATIONSTop Secret/SCI with Active Full Scope Polygraph – must be active prior to start
Bachelor's degree preferred; equivalent experience considered
5+ years of system administration experience in classified or secure DoD/IC environments.
Required Qualifications- Active TS/SCI clearance with Full Scope Polygraph – must be active prior to start
- Deep hands-on Linux proficiency across RHEL, Rocky Linux, and/or CentOS
- Demonstrated experience with DISA STIGs and SCAP compliance scanning
- Working knowledge of NIST SP 800-53 controls and RMF process
- Experience with SSP development and A&A/ATO activities
- Hands-on STE/STN installation, configuration, and support experience
- Solid understanding of PKI/TLS/cryptographic standards including DoD PKI and FIPS enforcement
- Strong IP networking fundamentals and host-based firewall management
- Experience with container platforms (Docker, Podman, Kubernetes, or Open Shift)
- Experience with virtualization platforms (VMware vSphere, KVM/QEMU)
- Storage management experience with NAS, SAN, LVM, and/or distributed storage
- DoD 8140 IAT Level II compliance (Security+, CASP+, or equivalent)
- Experience with Ansible, Puppet, Salt Stack, or Chef
- Proficiency in Bash and Python scripting
- Open Shift Container Platform experience in classified deployments
- Experience with cross-domain solutions (CDS)
- Familiarity with DoD cloud environments (AWS Gov Cloud, C2S)
- Red Hat RHCSA or RHCE certification
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