System Administrator - TS/SCI

The Fountain Group; Washington (District of Columbia); On-site; USD 103,320 - 114,010; Full time

Job summary

A leading technology services provider is seeking an experienced Linux-focused System Administrator for an onsite position in Washington, DC. The role requires an active TS/SCI clearance with Full Scope Polygraph. Responsibilities include maintaining a complex Linux-based infrastructure and ensuring security compliance. Candidates should have over 5 years of system administration experience in DoD/IC environments and proficiency in various technologies including RHEL and container platforms.

Qualifications

• 5+ years of system administration experience in classified or secure DoD/IC environments.
• Active TS/SCI clearance with Full Scope Polygraph required.
• Experience with container and virtualization platforms.

Responsibilities

• Maintain operational health of complex Linux-based infrastructure.
• Serve as technical authority on Linux systems engineering.
• Ensure security compliance within a SCIF environment.

Skills

Linux proficiency across RHEL, Rocky Linux, and/or CentOS

DISA STIGs and SCAP compliance scanning

NIST SP 800-53 controls knowledge

SSP development and A&A/ATO activities

STE/STN installation and configuration

PKI/TLS standards understanding

IP networking fundamentals

Firewall management

Container platforms (Docker, Podman)

Virtualization platforms (VMware vSphere, KVM/QEMU)

Storage management (NAS, SAN, LVM)

DoD 8140 IAT Level II compliance

Education

Bachelor's degree or equivalent experience

Tools

Bash

Python scripting

Ansible

Puppet

SaltStack

Chef

OpenShift Container Platform

Job description

Top Secret/SCI with Active Full Scope Polygraph – must be active prior to start

100% Onsite near Washington, DC
Pay: $75.00-82.76/hour W2 only.
Duration: 5 yrs

Position Overview

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.

QUALIFICATIONS

Top 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 OpenShift)
• 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)

Desired Skills

• Experience with Ansible, Puppet, SaltStack, or Chef
• Proficiency in Bash and Python scripting
• OpenShift Container Platform experience in classified deployments
• Experience with cross-domain solutions (CDS)
• Familiarity with DoD cloud environments (AWS GovCloud, C2S)
• Red Hat RHCSA or RHCE certification

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