Senior RHEL Systems Administrator & Automation Lead

ASRC Federal; Aberdeen (MD); On-site; USD 90,000 - 120,000; Full time

Job summary

ASRC Federal is seeking a Senior Linux Systems Administrator to support DEVCOM-CBC and the Transformation Decision Analysis Center (TDAC) with enterprise RHEL infrastructure. You will engineer, deploy, secure, and maintain systems supporting U.S.

Army operations, leveraging automation pipelines and strict security controls. The role focuses on hands-on administration, Ansible playbooks, SELinux enforcement, and integration with LDAP/AD IAM.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field or additional years of relevant work experience.
• 4+ years of experience in Linux administration and support.
• 3 years of Red Hat experience.

Responsibilities

• Architect, deploy, configure, maintain, and decommission enterprise RHEL 7, 8, and 9 servers with kernel updates and lifecycle management.
• Develop, test, and execute Ansible playbooks to automate tasks and maintenance; write Bash scripts for automation.
• Manage systemd services, SELinux in enforcement mode, and Docker container runtimes.
• Configure and manage local storage using LVM; deploy Samba and NFS shares for enterprise use.
• Provide infrastructure hosting support for middleware and databases (Oracle, WebLogic, Apache, PostgreSQL, MongoDB).
• Apply DISA STIGs and perform vulnerability remediation using ACAS/Nessus results to maintain IAMV and STIG compliance.
• Integrate RHEL with LDAP/AD for CAC/PKI-based MFA and manage DoD PKI certificates.
• Monitor health and performance; perform root-cause analysis and implement optimizations.

Skills

Ansible automation

Bash scripting

RHEL administration

Security compliance

LDAP/AD IAM

Education

Bachelor’s degree in CS/IT

Tools

Red Hat Satellite

Docker

ACAS/Nessus

PKI / CAC

Job description

ASRC Federal is seeking a Senior Linux Systems Administrator to support DEVCOM-CBC and the Transformation Decision Analysis Center (TDAC) with enterprise RHEL infrastructure. You will engineer, deploy, secure, and maintain systems supporting U.S.

Army operations, leveraging automation pipelines and strict security controls. The role focuses on hands-on administration, Ansible playbooks, SELinux enforcement, and integration with LDAP/AD IAM.