Senior Linux Engineer

Experteer Overview In this senior role, you design and implement infrastructure automation for Red Hat environments at Leidos, focusing on IaC and containerized deployments. You will lead RHEL9 administration, perform security hardening, and mentor junior engineers while aligning with DoD security requirements. You’ll integrate Ansible automation into CI/CD and drive improvements in performance and reliability. This position offers hands-on impact on mission-critical systems at Langley/VA and requires a proactive, security-focused mindset. Compensation / Benefits * Administer and deploy Red Hat Enterprise Linux 9 servers and critical applications * Design, develop, and maintain Ansible playbooks/roles for infrastructure automation * Automate deployments with Ansible Automation Platform, Terraform, and Packer * Troubleshoot and optimize Ansible deployments and RHEL configurations * Collaborate to integrate Ansible automation into CI/CD pipelines * Manage RHEL patching, upgrades, and security hardening * Provide technical leadership and mentorship to junior staff * Maintain Satellite/Capsule management systems * Document architecture and support an infrastructure automation roadmap * Support incident response with other teams * Cross-train to cover additional tasks * Routinely apply security patches to systems and container images * Monitor system performance and enforce security policies * Ensure compliance with DoD security policies * Research emerging automation/security technologies Tasks * Active DoD TS/SCI clearance (current) * DoD 8570/8140-compliant certification at IAT Level II (CompTIA Security+ CE) * 6+ years of Linux administration * Experience with containerization (Podman, Docker, Kubernetes, OpenShift, or Rancher) * Experience with configuration management (Puppet, Ansible, or Salt) * Hands-on virtualization experience * Scripting in at least one language (Bourne shell, sed, awk, Perl, or Python) * Understanding of LDAP and SSO technologies * Strong emphasis on automation and IaC * Ability to work in fast-paced, dynamic environments * Experience integrating automation into CI/CD * Knowledge of RHEL networking and Satellite administration (preferred) * Expertise in Ansible Automation Platform / Ansible Tower (preferred) * Linux+ certification (preferred) Key requirements *

security hardening * Provide technical leadership and mentorship to junior staff * Maintain Satellite/Capsule management systems * Document architecture and support an infrastructure automation roadmap * Support incident response with other teams * Cross-train to cover additional tasks * Routinely apply security patches to systems and container images * Monitor system performance and enforce security policies * Ensure compliance with DoD security policies * Research emerging automation/security technologies Tasks * Active DoD TS/SCI clearance (current) * DoD 8570/8140-compliant certification at IAT Level II (CompTIA Security+ CE) * 6+ years of Linux administration * Experience with containerization (Podman, Docker, Kubernetes, OpenShift, or Rancher) * Experience with configuration management (Puppet, Ansible, or Salt) * Hands-on virtualization experience * Scripting in at least one language (Bourne shell, sed, awk, Perl, or Python) * Understanding of LDAP and SSO technologies * aaa and emphasis on automation and IaC * Ability to work in fast-paced, dynamic environments * Experience integrating automation into CI/CD * Knowledge of RHEL networking and Satellite administration (preferred) * Expertise in Ansible Automation Platform / Ansible Tower (preferred) * Linux+ certification (preferred) Key requirements *