Senior Linux System Administrator

ASRC Federal is a leading government contractor furthering missions in space, public health and defense. As an Alaska Native owned corporation, our work helps secure an enduring future for our shareholders. Join our team and discover why we are a top veteran employer and Certified Great Place to Work™


Linux System Administrator (Senior)
CECOM ASIC | PEO EIS MSP | ASRC Federal
At ASRC Federal Holding Company, we are committed to leveraging cutting-edge technology and innovative solutions to support the mission of the US Army Communications-Electronics Command (CECOM). As we continue to enhance our IT infrastructure and software capabilities, we are seeking highly skilled professionals to join our team in various key roles. Each position plays a crucial part in maintaining and advancing our environment, ensuring seamless operations and robust support for CECOM personnel worldwide.
Position Description
This position supports Linux Engineering Sustainment under ASRC Federal's CECOM SETA Support within the PEO EIS MSP, in direct support of the CECOM Army Software Integration Center (ASIC). The PEO EIS MSP ensures that the U.S. Army's Linux systems are secure, reliable, and capable of supporting mission-critical operations. As a Senior Linux System Administrator, you will lead the day-to-day administration, hardening, and modernization of complex enterprise Linux environments and play a key role in delivering ASIC software updates to deployed soldiers.
Key Responsibilities
• Administer, maintain, and harden enterprise Red Hat Enterprise Linux (RHEL) environments across on-premise and AWS GovCloud infrastructure.
• Operate and troubleshoot high-availability architectures including Red Hat Pacemaker / Corosync clusters and load-balanced services.
• Lead patch management, system hardening, and STIG/ACAS compliance activities; coordinate vulnerability remediation across production fleets.
• Support ASIC software delivery workflows, including web-based deployment of software updates to deployed Army units.
• Develop and maintain Infrastructure as Code (IaC) and configuration management using Ansible, Terraform, or equivalent.
• Author and maintain automation scripts (Bash, Python) to streamline operational tasks, monitoring, and reporting.
• Collaborate with security, network, and application teams to support Authority to Operate (ATO) activities and Continuous Authorization processes.
• Serve as a senior technical resource — mentor junior administrators, lead troubleshooting bridges, and contribute to architecture and lifecycle decisions.
Minimum Qualifications
• Bachelor's Degree in Computer Science, Computer Engineering, Information Systems, or a related technical discipline preferred. Equivalent experience in lieu of degree will be considered.
• Minimum 5 years of hands-on Linux system administration experience, with at least 3 of those years in a senior-level or technical lead capacity.
• Demonstrated experience supporting mission-critical Linux environments in a DoD or federal setting.
• Experience administering and troubleshooting RHEL in both on-premise data centers and cloud environments.
• Proven ability to communicate technical strategies, risks, and recommendations clearly to both technical teams and customer stakeholders.
• Active Secret security clearance required; ability to obtain and maintain TS/SCI strongly preferred.
• DoD 8570/8140 compliant baseline certification (Security+ CE or higher) required at time of hire or within 6 months.
Required Skills
• Expert-level Red Hat Enterprise Linux administration (RHEL 8 required; RHEL 9 strongly preferred).
• Experience operating RHEL workloads in AWS GovCloud, including EC2, S3, IAM, VPC, and EBS.
• Strong scripting and automation skills in Bash and Python; PowerShell a plus.
• Hands-on experience with Ansible (or equivalent configuration management — Puppet, Chef, Salt).
• Working knowledge of CI/CD tooling (GitLab CI, Jenkins, or similar) and Git-based source control workflows.
• Experience with system hardening, STIG application, ACAS scanning, and vulnerability remediation in DoD environments.
• Solid understanding of TCP/IP networking, DNS, LDAP/Active Directory integration, PKI, and SSH key management.
• Demonstrated problem-solving ability under operational pressure; excellent written and verbal communication.
• Linux-focused certification preferred (RHCSA, RHCE, or CompTIA Linux+).
Desired Skills
• Familiarity with CECOM ASIC software delivery processes and web-based deployment to deployed Army units.
• Infrastructure as Code experience with Terraform or AWS CloudFormation.
• Experience with observability and SIEM tooling — Splunk, Elastic, Prometheus/Grafana.
• Knowledge of Zero Trust architecture principles an