Linux Systems Administrator

ASRC Federal•Aberdeen Proving Ground, MD

7d•$79,000 - $120,000•Onsite

About The Position

ASRC Federal is seeking a Linux System Administrator 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 DoD and DISA standards. The position primarily operates in a professional office environment at Aberdeen Proving Ground, Maryland, within or alongside the DEVCOM-CBC TDAC organization. It involves extended computer use 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 for individuals with disabilities to perform the essential functions. The company offers competitive pay and benefits that may include health care, dental, vision, life insurance, a 401(k), education assistance, and paid time off including PTO, holidays, and other paid leave required by law. Compensation depends on factors including experience, skills, education, geographic location, internal equity, and business needs.

Requirements

Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field, or additional years of relevant work experience.
At least 4 years of experience.
At least 3 years of Red Hat experience.
Meet DoDI 8140.03 qualification requirements for DCWF Work Role 451 Systems Administrator - Intermediate. Accepted foundational qualifications include certifications mapped to Work Role 451 in the current DoD 8140 Qualification Matrix, such as Cloud+, Security+, and SSCP.
Have an active or interim DoW Secret clearance, or be able to obtain and maintain a DoW Secret clearance within the timeframe required by the applicable contract.
Eight or more years of related work experience may be used in lieu of a degree.

Nice To Haves

Red Hat certification.
Linux+ certification.
DoD and RHEL system integration experience.
DoD vulnerability remediation experience.
Active Secret clearance.
Preferred certifications: Security+, SSCP, or Cloud+.

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.
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 Samba and NFS enterprise network share services.
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 IAMV and STIG compliance.
Integrate RHEL systems with enterprise LDAP or Active Directory identity providers 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.