Linux Engineer

Leidos•Lorton, VA

2d•$116,350 - $210,325•Onsite

About The Position

Leidos Enterprise Civil Division is seeking a Linux Engineer in the Lorton, Virginia area to support the Department of Homeland Security (DHS) on the HEITS contract. This role involves maintaining a Red Hat Enterprise Linux infrastructure across multiple network enclaves, supporting vulnerability and compliance scanning, establishing new baseline systems, and providing Tier 3 support. The position requires a deep technical understanding of Linux, strong leadership, and effective project management skills on both classified and unclassified networks. The engineer will collaborate with software developers, system administrators, and other engineers to support DHS customer missions.

Requirements

Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related field and 12-15 years of experience. Additional education/experience may be considered in lieu of a degree.
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, including classified and unclassified networks.
Demonstrated experience administering Red Hat Satellite Server, including repository management, content views, lifecycle environments, host collections, activation keys, subscriptions, provisioning, and patch deployment.
Strong experience planning and executing monthly patch cycles for enterprise Linux environments, including pre-patch validation, patch deployment, troubleshooting, post-patch verification, and reporting.
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, with the ability to collaborate effectively with technical teams, security personnel, leadership, and mission stakeholders.
Ability to manage competing priorities and support scheduled maintenance windows across multiple environments.

Nice To Haves

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.

Responsibilities

Design, implement, and manage Red Hat Satellite Server infrastructure for software management, patching, provisioning, and lifecycle management of Linux systems.
Plan, coordinate, and execute monthly patch cycles using Red Hat Satellite Server, including synchronization, repository management, errata review, scheduling, deployment, validation, and reporting.
Manage Satellite Server content views, lifecycle environments, activation keys, host collections, subscriptions, repositories, and patch baselines.
Administer, maintain, and support Linux systems in multiple classified and unclassified environments.
Ensure Linux systems adhere to STIG compliance standards through assessments, audits, vulnerability reviews, and remediation.
Collaborate with security teams to identify vulnerabilities, security gaps, and risks, and develop remediation plans.
Support vulnerability management by reviewing scan results, mapping findings to patches or configuration changes, and documenting remediation actions.
Maintain RHEL baseline templates for OS builds, including STIG profiles, security controls, logging, and auditing.
Define monitoring standards for RHEL systems using SolarWinds and/or other tools, ensuring defined monitoring profiles and alerting criteria.
Collaborate with cross-functional teams to understand operational requirements and translate them into Linux, automation, and patch management solutions.
Implement and manage patch automation strategies for timely, consistent, and secure updates.
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, enclave-specific requirements, change records, 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.