Linux Systems Administrator

ASRC Federal•Aberdeen Proving Ground, MD

1d•Onsite

About The Position

ASRC Federal Technology Solutions LLC is seeking a Linux Systems Administrator with an active Top Secret clearance to support DEVCOM-CBC and the Transformation Decision Analysis Center (TDAC). The Senior Linux Systems Administrator serves as a technical subject matter expert responsible for engineering, deploying, configuring, securing, and maintaining enterprise Red Hat Enterprise Linux (RHEL 7, 8, and 9) infrastructure supporting U.S. Army operations. The role includes system automation, identity management, storage configuration, application-hosting integration, and vulnerability remediation in accordance with DoW and DISA standards. The position primarily operates in a professional office environment at Aberdeen Proving Ground, Maryland, working within or alongside the DEVCOM-CBC TDAC organization. It involves extended use of computer equipment and may require moving between buildings on the installation to support users and coordinate with government staff. Some work may involve access to classified facilities and systems. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of the position.

Requirements

Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field and 7 or more years of relevant work experience.
Three years of Red Hat experience.
An active or interim DoW Top Secret clearance.
A DoDI 8140.03 qualification for DCWF Work Role 451 Systems Administrator - Intermediate. Accepted foundational qualifications include certifications mapped to this work role in the current DoD 8140 Qualification Matrix, such as Cloud+, Security+, and SSCP.

Nice To Haves

Red Hat certification.
Linux+ certification.
DoW and RHEL system integration experience.
DoW vulnerability remediation experience.
Active Top Secret clearance.
Security+ certification.
SSCP certification.
Cloud+ certification.
A Bachelor’s degree in Information Technology, Computer Science, or a related field; alternatively, four additional years of experience may satisfy the education requirement.

Responsibilities

Architect, deploy, configure, maintain, and decommission enterprise RHEL 7, 8, and 9 servers.
Manage kernel updates, system upgrades, and package lifecycles through yum/dnf repositories integrated with Red Hat Satellite and centralized automation pipelines.
Develop, test, and execute Ansible playbooks to automate administrative tasks, configuration-drift management, and routine maintenance.
Write and maintain Bash scripts for system automation.
Manage systemd service orchestration, enforce SELinux policies in enforcing mode, and manage Docker container runtime environments.
Configure and administer local block storage using Logical Volume Manager (LVM).
Deploy, secure, and maintain enterprise network share services, including Samba and NFS.
Provide infrastructure-level hosting support, system tuning, and OS prerequisites for middleware and database tiers, including Oracle Database, Oracle WebLogic, Apache HTTP Server, PostgreSQL, and MongoDB.
Apply and validate DISA Security Technical Implementation Guides (STIGs) across Linux nodes.
Remediate vulnerabilities using automated and manual methods based on ACAS/Nessus scan results to maintain continuous IAMV and STIG compliance.
Integrate RHEL systems with enterprise identity providers (LDAP/Active Directory) and enforce CAC/PKI-based multifactor authentication.
Issue, deploy, and maintain DoD PKI SSL/TLS certificates for server identification, secure communications, and client authentication.
Monitor system health, performance metrics, and logs using enterprise monitoring tools.
Conduct root cause analysis of system degradation or outages and implement performance optimizations and corrective actions.