The posting
ASRC Federal Technology Solutions LLC is looking for a Linux System Administrator with an active Top Secret clearance to support their work with DEVCOM-CBC and the Transformation Decision Analysis Center (TDAC) organization. The Senior Linux Systems Administrator serves as a technical subject matter expert responsible for the engineering, deployment, configuration, security compliance, and lifecycle maintenance of enterprise Red Hat Enterprise Linux (RHEL 7, 8, and 9) infrastructure supporting U.S. Army operations. The candidate will manage system automation, identity management, storage configuration, application hosting integration, and vulnerability remediation in accordance with DoW and DISA standards. KEY RESPONSIBILITIES
Architect, deploy, configure, maintain, and decommission enterprise RHEL 7, 8, and 9 servers. Manage kernel updates, system upgrades, and package lifecycles via yum/dnf repositories integrated with Red Hat Satellite and centralized automation pipelines Develop, test and execute Ansible playbooks to automate day-to-day administrative tasks, configuration drifts, and routine maintenance. Write and maintain Bash scripts for system automation Manage systemd service orchestration, enforce strict SELinux policies in enforcing mode, and manage container runtime environments using Docker Configure and administer local block storage utilizing 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 enterprise middleware and database tiers, including Oracle Database, Oracle WebLogic, Apache HTTP Server, PostgreSQL, and MongoDB instances Apply and validate DISA Security Technical Implementation Guides (STIGs) across all Linux nodes. Perform vulnerability remediation 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) enforcing CAC/PKI-based multi-factor 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 on system degradation or outages, implementing performance optimizations and corrective actions
REQUIRED QUALIFICATIONS
Bachelor’s degree (BA/BS) in Computer Science, Information Technology, Engineering, or a related field and 7+ years of relevant work experience 3 years of RedHat experience
PREFERRED QUALIFICATIONS
RedHat certification Linux+ certification DoW and RHEL system integration experience DoW vulnerability remediation experience Active Top Secret clearance
CLEARANCE LEVEL
Minimum of an active or interim DoW TOP SECRET clearance.
EDUCATION REQUIRMENTS
Bachelor’s degree in Information Technology, Computer Science, or a related field or 4 additional years of experience
CERTIFICATION
DoDI 8140.03 qualification for DCWF Work Role 451 Systems Administrator - Intermediate. Accepted foundational qualifications include certifications mapped to Work Role 451 Systems Administrator - Intermediate in the current DoD 8140 Qualification Matrix, such as Cloud+, Security+, and SSCP.
Preferred
Security+ SSCP Cloud+
WORK ENVIRONMENT AND PHYSICAL DEMANDS:
This position primarily operates in a professional office environment at Aberdeen Proving Ground, MD, working within or alongside the DEVCOM-CBC TDAC organization. The role involves extended use of computer equipment and may require the candidate to move 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 this position.



