Linux Engineer

Leidos Enterprise Civil Division in support of the Department of Homeland Security (DHS) is seeking a Linux Engineer to work in the Lorton, Virginia area. The successful candidate will be responsible for maintaining a Red Hat Enterprise Linux infrastructure that supports multiple network enclaves, providing support for monthly vulnerability and compliance scanning, establishing new baseline systems for approved projects, and providing Tier 3 support for escalated technical issues.

Responsibilities:

• Design, implement, and manage Red Hat Satellite Server infrastructure to support efficient software management, monthly patching, provisioning, and lifecycle management of Linux systems across multiple enclaves and classification levels.
• Plan, coordinate, and execute monthly patch cycles using Red Hat Satellite Server.
• Manage Satellite Server content views, lifecycle environments, activation keys, host collections, subscriptions, repositories, and patch baselines.
• Administer, maintain, and support Linux systems operating in multiple classified and unclassified environments.
• Ensure Linux systems adhere to applicable STIG compliance standards.
• Work closely with security teams to identify vulnerabilities, security gaps, and potential risks.
• Support vulnerability management activities by reviewing scan results and documenting remediation actions.
• Maintain RHEL baseline templates for OS builds.
• Define monitoring standards for RHEL systems using SolarWinds and/or other tools.
• Collaborate with cross-functional teams to understand operational requirements and translate them into effective Linux, automation, and patch management solutions.
• Implement and manage patch automation strategies.
• Troubleshoot complex technical issues related to RHEL administration, Red Hat Satellite Server, patch deployment, system provisioning, and compliance enforcement.
• Maintain accurate documentation of system configurations, patching procedures, and operational processes.
• Participate in maintenance windows, change management activities, and after-action reviews.
• Research and stay current with emerging technologies, best practices, and trends in Linux administration, automation, patch management, vulnerability remediation, and security compliance.
• Provide technical guidance to Tier 2 team members.

Qualifications:

• Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related field and 12-15 years of experience.
• Active TS/SCI government clearance and the ability to obtain DHS EOD.
• 10 or more years of extensive hands-on experience with Red Hat Enterprise Linux administration, configuration, troubleshooting, hardening, and lifecycle management.
• Experience supporting Linux systems across multiple enclaves, environments, or classification levels.
• Demonstrated experience administering Red Hat Satellite Server.
• Strong experience planning and executing monthly patch cycles for enterprise Linux environments.
• Strong understanding of patch management strategies, vulnerability remediation, and enterprise change management processes for Red Hat systems.
• In-depth knowledge of STIG compliance and experience implementing, validating, and documenting Linux security controls.
• Familiarity with scripting languages such as Python, Bash, or PowerShell.
• Excellent problem-solving skills with the ability to diagnose and resolve complex technical issues in mission-critical environments.
• Solid understanding of cybersecurity principles, secure system administration practices, and configuration management best practices.
• Strong written and verbal communication skills.
• Ability to manage competing priorities and support scheduled maintenance windows across multiple environments.

Preferred Qualifications:

• Relevant certifications such as Red Hat Certified Engineer, Red Hat Certified System Administrator, Red Hat Certified Specialist in Ansible Automation, Certified Information Systems Security Professional, Security+, or equivalent certifications.
• Experience working in federal, DHS, DoD, or other regulated enterprise environments.
• Experience with vulnerability scanning tools and remediation tracking processes.
• Familiarity with ITIL, change management, configuration management, and incident management practices.
• Experience developing standard operating procedures, patch plans, compliance documentation, and technical implementation guides.