Sr Systems Engineer (Linux/Automation) in Winter Garden

Leidos is seeking a cleared Senior Systems Engineer to design, deploy, and maintain secure Red Hat Enterprise Linux (RHEL) infrastructure within Department of Defense (DoD) and Department of the Navy/Air Force/Army (DoW) networks. This individual will own the automated provisioning pipeline end to end - from bare-metal and virtual machine Kickstart configurations through enterprise-wide configuration management using Ansible and Bash - ensuring systems are deployed consistently, securely, and in compliance with DoD standards.

Education/Experience: BS degree and 8+ years of enterprise Linux system administration and engineering experience. Additional years of experience may be considered in lieu of degree.

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• \n Automated Provisioning: Develop and maintain attended/unattended RHEL OS installations using advanced Kickstart configuration files and PXE boot environments. \n

• \n Configuration Management: Write and optimize idempotent Ansible playbooks, roles, and collections to manage server infrastructure at scale. \n

• \n Scripting & Tooling: Build robust Bash automation scripts for custom initialization tasks, local system diagnostics, and integration glue. \n

• \n Security & Compliance: Enforce Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs) and Risk Management Framework (RMF) standards using automated remediation scripts. \n

• \n System Lifecycle Support: Troubleshoot complex OS-level performance issues, manage package/patch lifecycles, and update technical documentation and operational runbooks. \n

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• \n Red Hat Certifications: Red Hat Certified Engineer (RHCE) or Red Hat Certified Specialist in Ansible Automation; Red Hat Certified Architect (RHCA) a plus. \n

• \n Enterprise Content Management: Experience administering Red Hat Satellite for patch, content, and subscription lifecycle management across large RHEL fleets. \n

• \n Extended Scripting: Working knowledge of Python in addition to Bash for automation and tooling beyond shell-level scripting. \n

• \n Containerization: Familiarity with Red Hat OpenShift, Kubernetes, or Docker in DoD/DoW environments. \n

• \n CI/CD & Version Control: Experience with Git/GitLab and CI/CD pipelines to support infrastructure-as-code workflows. \n

• \n Cloud Environments: Exposure to automating RHEL workloads in AWS GovCloud or Azure Government. \n

• \n Compliance Automation: Hands-on experience with SCAP Compliance Checker or Evaluate-STIG for automated hardening and assessment. \n

• \n Advanced Certification: DoD 8570/8140 IAT Level III (CASP+, CISSP, or GCIH) in lieu of Level II. \n

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If you’re looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We’re not hiring followers. We’re recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We’re already at step 30 - and moving faster than anyone else dares.