Linux Engineer

Leidos LLC; Lorton (VA); On-site; USD 126,000 - 210,000; Full time

Benefits offered by this job

Roth 401k matching

Stock options

Competitive benefits

Job summary

Leidos Enterprise Civil Division in the DHS support space seeks a Linux Engineer to maintain RedHat Enterprise Linux across multiple enclaves, ensuring STIG compliance and vulnerability remediation.

Role involves patch management, Satellite Server administration, and collaboration with software developers, admins, and engineers to support mission critical DHS networks.

Qualifications

• College‑level degree in a related field with 12‑15 years of experience.
• Active TS/SCI clearance and ability to obtain DHS clearance.
• 10+ years of hands‑on RedHat Enterprise Linux administration experience.
• Experience across multiple enclaves and classified/unclassified networks.
• Experience administering RedHat Satellite Server with content views and patch deployment.
• Strong patch management, vulnerability remediation, and change management knowledge.
• Scripting skills in Python/Bash/PowerShell.
• Excellent problem‑solving and communication skills.

Responsibilities

• Design and manage RedHat Satellite Server infrastructure for multi‑enclave Linux systems.
• Coordinate monthly patch cycles, repository management, and reporting.
• Maintain Satellite content views, environments, and activation keys.
• Ensure STIG compliance and vulnerability remediation.
• Collaborate with security teams to address vulnerabilities and implement fixes.
• Provide guidance to Tier2 teams and document configurations and processes.

Skills

RedHat Enterprise Linux

Satellite Server

Vulnerability remediation

ITIL change management

Python/Bash scripting

Project management

Education

Bachelor's degree in Computer Science or related field

Tools

SolarWinds

RedHat Satellite Server

Patch management tools

Job description

Leidos Enterprise Civil Division in support of the Department of Homeland Security (DHS) is looking for talent in the Information Technology field to work as a Linux Engineer in the Lorton, Virginia area. In FY23 Leidos was awarded the Homeland Enterprise Information Technology Secure Services and Support (HEITS) follow‑on contract to support and enhance the DHS networks, Homeland Secure Data Network (HSDN) and the Classified‑Local Area Network (C‑LAN). Leidos is a Fortune 500 science and technology leader with a competitive benefits package, including a Roth 401k with company matching and stock‑driven investment options.

The successful candidate will be responsible for maintaining a RedHat Enterprise Linux infrastructure that will support multiple network enclaves; providing support for monthly vulnerability and compliance scanning across all enclaves; establishing new baseline systems for approved projects and providing Tier3 support for escalated technical issues. This role requires a deep technical understanding of the Linux Operating System, strong leadership abilities, and effective project management skills on both classified and unclassified networks. You will work closely with multiple groups, including software developers, system administrators, and various engineers, to support the missions of our DHS customers. The right candidate will possess the following skills and qualifications and be ready to handle all responsibilities independently and professionally.

Roles & Responsibilities

• Design, implement, and manage RedHat 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 RedHat Satellite Server, including patch content synchronization, repository management, errata review, patch scheduling, deployment, validation, and post‑patching reporting.
• Manage Satellite Server content views, lifecycle environments, activation keys, host collections, subscriptions, repositories, and patch baselines to support enclave‑specific operational and security requirements.
• Familiarity with ITIL, change management, configuration management, and incident management practices.
• Administer, maintain, and support Linux systems operating in multiple classified and unclassified environments, ensuring proper separation, compliance, and operational readiness within each enclave.
• Ensure Linux systems adhere to applicable STIG compliance standards by conducting regular assessments, audits, vulnerability reviews, and remediation activities across all supported enclaves.
• Work closely with security teams to identify vulnerabilities, security gaps, and potential risks; develop and execute remediation plans in accordance with DHS, DoD, NIST, and industry best practices, as applicable.
• Support vulnerability management activities by reviewing scan results, mapping findings to patches or configuration changes, and documenting remediation actions.
• Maintain RHEL baseline templates for OS builds. (STIG profiles, security controls, logging, auditing).
• Define monitoring standards for RHEL systems using SolarWinds and/or other tools: Ensure RHEL systems have defined monitoring profiles and alerting criteria for OS health metrics, Service/process checks and Log and event thresholds.
• Collaborate with cross‑functional teams, including system owners, network administrators, cybersecurity personnel, and mission stakeholders, to understand operational requirements and translate them into effective Linux, automation, and patch management solutions.
• Implement and manage patch automation strategies to ensure timely, consistent, and secure application of updates across infrastructure while minimizing downtime, operational impact, and mission disruption.
• Troubleshoot complex technical issues related to RHEL administration, RedHat 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 related to monthly patching and system updates.
• 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 Tier2 team members, fostering knowledge sharing, process improvement, and skill development.

Qualifications

• College‑level 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 RedHat 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 RedHat 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 RedHat 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.

Preferred Qualifications

• Relevant certifications such as RedHat Certified Engineer, RedHat Certified System Administrator, RedHat 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.

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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.

Original Posting: October1, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range

Pay Range $116,350.00 - $210,325.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Securing Your Data Leidos will never ask you to provide payment‑related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment‑related information or any other personal information, please report the email to [e-mail].