SELinux SME

Job Description:

Clearance: Active Secret Clearance

Responsibilities:

* Serve as a Linux Systems Engineer with deep SELinux expertise

* Engineer and support secure Linux systems in an enterprise environment o (e.g., Red Hat, CentOS, Rocky Linux)

* Configure SELinux, write policies, tune, and debug to meet security requirements

* Harden, maintain, and enhance a secure enterprise environment * Develop SELinux policies, enforcement, and troubleshooting in Red Hat-based OS

* Align engineering, development, and automation with DoD/IC compliance controls

* Analyze and optimize system/application behavior in confined SELinux contexts

* Enforce MAC policies in collaboration with development and security teams

* Prepare and maintain required technical documentation (system-level and user-level)

* Support system baselining, technical evaluations, and configuration standardization

* Perform O&M tasks including OS patching, upgrades, and security updates

Qualifications:

* BS in Computer Science or related field

* 5+ years of experience in Linux systems engineering and administration

* Strong, hands-on experience with SELinux: o Writing and managing custom SELinux policies o Interpreting AVC denials and troubleshooting access issues o Tools like audit2allow, semanage, setroubleshoot, and checkmodule

* Deep experience with Red Hat derivatives: RHEL, CentOS, Rocky Linux

* Skilled in shell scripting and Linux command-line administration

* Proficiency in scripting languages: Python, Bash, Ruby, PHP

* Experience with IaC and config management tools: Ansible, Puppet, Foreman

* Experience with containerization and cloud platforms (preferred): AWS, Azure, Google Cloud Platform - Kubernetes, OpenShift

Oscar Associates Limited (US) is acting as an Employment Agency in relation to this vacancy.