{"schemaVersion":"jobsearcher.job.v1","id":"27dd3e3ba20f7b52a9c3ec0b","url":"https://jobsearcher.com/jobs/27dd3e3ba20f7b52a9c3ec0b","canonicalUrl":"https://jobsearcher.com/jobs/27dd3e3ba20f7b52a9c3ec0b","title":"Linux OS Engineer","description":"Linux OS Engineer Responsibilities & Qualifications: Responsibilities: The Linux OS Engineer is expected to be able to accomplish the following: Platform Engineering & OperationsEngineer, deploy, and administer RHEL/CentOS/Rocky and Ubuntu servers (physical and virtual) across dev/test/prod.Implement standard OS baselines, golden images, and immutable patterns (e.g., image pipelines, templates, kickstart/preseed, cloud-init).Manage patching and kernel updates with maintenance windows and rollback plans; validate health post-change.Configuration Management & AutomationBuild and maintain automation using Ansible, Bash, and Python to enforce configuration drift control and speed delivery.Integrate configuration policies with CI/CD workflows and version control; write idempotent playbooks/roles.Security & ComplianceApply and maintain DoD STIG/hardening controls; remediate findings from vulnerability scans; maintain audit artifacts.Implement/validate FIPS, SELinux, disk encryption, log forwarding, and secure remote access; support ATO evidence.Reliability, Monitoring & PerformanceDesign and operate logging/metrics/alerting (e.g., journald/rsyslog, auditd, Prometheus/Grafana/ELK) with actionable SLOs.Troubleshoot OS, storage, and network performance (I/O, CPU, memory, TCP/IP) using system profiling tools.High Availability & ContinuitySupport clustering and HA patterns (Pacemaker/Corosync, systemd units, load balancers); document and test DR/backup restore.Collaboration & SupportProvide Tier 3 escalation; create runbooks/SOPs; participate in on-call rotations as needed.Partner closely with cybersecurity, network, storage, virtualization, and application owners to deliver end-to-end outcomes. Required Qualifications: Active TS/SCI + CI Poly clearance5-7 years of professional experience administering Linux in enterprise or government environments (or equivalent combination of education/experience suitable for mid level).One of the following DoD 8570/CS-NET-451 certifications:Security+ (CE)RHCSA/RHCECKAITIL FoundationStrong proficiency with RHEL-family and Debian/Ubuntu administration, system services, and package managers (dnf/yum/apt).Hands-on with Ansible and scripting (Bash, Python) for automation and compliance.Demonstrated experience applying STIG/hardening and working within secure change-controlled environments.Solid troubleshooting across compute, network, and storage layers; familiarity with virtualization (VMware/KVM) and ticketing/ITSM workflows.Ability to create and maintain SOPs, runbooks, and architecture diagrams supporting audits and operations. Desired Qualifications: Experience with RHEL Satellite/Foreman, Kickstart, IdM/FreeIPA/AD integration, and secrets management (e.g., HashiCorp Vault).Exposure to container runtimes (Podman/Docker), Kubernetes (RKE/AKS/Openshift), and hardened container images.Infrastructure-as-Code (Terraform), cloud (AWS/Azure/Gov zones), and registry/artifact management.Monitoring stacks (Prometheus/Grafana, ELK/OpenSearch) and SIEM integrations.SSCPCySA+GSECCASP+CISSPRed Hat Ansible Automation certificationTerraform AssociateKubernetes certification","company":"Stem Solutions","rawCompany":"stem solutions","city":"Hyattsville","state":"MD","isRemote":false,"isActive":false,"createdAt":"2026-06-26T03:31:07.281Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"},{"code":"15-1299.05","title":"Information Security Engineers","slug":"information-security-engineers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541519","title":"Other Computer Related Services","slug":"other-computer-related-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Linux OS Engineer","description":"Linux OS Engineer Responsibilities & Qualifications: Responsibilities: The Linux OS Engineer is expected to be able to accomplish the following: Platform Engineering & OperationsEngineer, deploy, and administer RHEL/CentOS/Rocky and Ubuntu servers (physical and virtual) across dev/test/prod.Implement standard OS baselines, golden images, and immutable patterns (e.g., image pipelines, templates, kickstart/preseed, cloud-init).Manage patching and kernel updates with maintenance windows and rollback plans; validate health post-change.Configuration Management & AutomationBuild and maintain automation using Ansible, Bash, and Python to enforce configuration drift control and speed delivery.Integrate configuration policies with CI/CD workflows and version control; write idempotent playbooks/roles.Security & ComplianceApply and maintain DoD STIG/hardening controls; remediate findings from vulnerability scans; maintain audit artifacts.Implement/validate FIPS, SELinux, disk encryption, log forwarding, and secure remote access; support ATO evidence.Reliability, Monitoring & PerformanceDesign and operate logging/metrics/alerting (e.g., journald/rsyslog, auditd, Prometheus/Grafana/ELK) with actionable SLOs.Troubleshoot OS, storage, and network performance (I/O, CPU, memory, TCP/IP) using system profiling tools.High Availability & ContinuitySupport clustering and HA patterns (Pacemaker/Corosync, systemd units, load balancers); document and test DR/backup restore.Collaboration & SupportProvide Tier 3 escalation; create runbooks/SOPs; participate in on-call rotations as needed.Partner closely with cybersecurity, network, storage, virtualization, and application owners to deliver end-to-end outcomes. Required Qualifications: Active TS/SCI + CI Poly clearance5-7 years of professional experience administering Linux in enterprise or government environments (or equivalent combination of education/experience suitable for mid level).One of the following DoD 8570/CS-NET-451 certifications:Security+ (CE)RHCSA/RHCECKAITIL FoundationStrong proficiency with RHEL-family and Debian/Ubuntu administration, system services, and package managers (dnf/yum/apt).Hands-on with Ansible and scripting (Bash, Python) for automation and compliance.Demonstrated experience applying STIG/hardening and working within secure change-controlled environments.Solid troubleshooting across compute, network, and storage layers; familiarity with virtualization (VMware/KVM) and ticketing/ITSM workflows.Ability to create and maintain SOPs, runbooks, and architecture diagrams supporting audits and operations. Desired Qualifications: Experience with RHEL Satellite/Foreman, Kickstart, IdM/FreeIPA/AD integration, and secrets management (e.g., HashiCorp Vault).Exposure to container runtimes (Podman/Docker), Kubernetes (RKE/AKS/Openshift), and hardened container images.Infrastructure-as-Code (Terraform), cloud (AWS/Azure/Gov zones), and registry/artifact management.Monitoring stacks (Prometheus/Grafana, ELK/OpenSearch) and SIEM integrations.SSCPCySA+GSECCASP+CISSPRed Hat Ansible Automation certificationTerraform AssociateKubernetes certification","datePosted":"2026-06-26T03:31:07.281Z","dateModified":"2026-06-26T03:31:07.281Z","hiringOrganization":{"@type":"Organization","name":"Stem Solutions","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Hyattsville","addressRegion":"MD","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"27dd3e3ba20f7b52a9c3ec0b"},"url":"https://jobsearcher.com/jobs/27dd3e3ba20f7b52a9c3ec0b"}}