The ESA V program is an IT Services program supporting several customers within the Department of Justice. The program provides a range of IT services, including help desk, deskside support, Windows workstation engineering and maintenance, managed print services, ITSM, Active Directory services, and video conferencing, as well as IT Infrastructure Operations and Engineering support.
Leidos is hiring a Senior Linux System Administrator to provide on-site support in Fairfax, VA at the customer enterprise data center. to users within the Department of Justice. This position requires a current active Secret clearance.
Primary Responsibilities
The successful candidate will work independently and as part of a team, performing high-level systems analysis, evaluation, design, integration, documentation, and implementation of complex Red Hat systems supporting applications that require a thorough knowledge of administrative and technical skills. Performs all duties of Red Hat administration including installation, configuration, securing, performance tuning, and troubleshooting. Applies higher-level business or technical principles and methods to very difficult technical problems to arrive at an engineering solution. Prepares technical reports and related documentation, and makes charts and graphs as needed to record results. Prepares and deliver presentations and briefings as required by the Task Order.
Basic Qualifications
Bachelor’s Degree with 12+ years’ experience as a Unix System Administrator – Operational experience with RHEL8 and RHEL9. High school diploma with additional years’ experience may be considered in lieu of a degree.
Must have Active Secret security clearance
3+ years deploying Unix in secured environments, i.e., DISA
3+ years using, updating and maintaining Red Hat Satellite
Documenting system processes for Unix environments
HW experience: Knowledge of Dell Servers, iDRAC, VMWare, AWS and Azure
SW experience: Operating Systems: RHEL8 and RHEL 9
Red Hat Satellite Server and Red Hat PCS Clustering
Experience with running Red Hat systems with SELINUX in “enforcing” mode
Experience with configuring PAM (Pluggable Authentication Modules) on RHEL to enable 2-factor authentication via RSA and/or Active Directory
Proficiency in developing and maintaining Ansible playbooks for system automation
Preferred Qualifications
VMWare Aware
Azure Aware
AWS Aware
Experience with RHEL 10
Experience with Ansible Automation Platform
Experience with the File Access Policy Daemon (fapolicyd) Service
DISA environment hardening experience
Docker/Containers
ServiceNow experience
Complex KornShell (ksh) or bash scripting
Ability to apply user requirements to the analysis, planning, and design of technology systems.
Ability to communicate problems and solutions both verbally and in writing to the Government Lead.
Ability to work independently and troubleshoot problems with speed and efficiency.
Ability to work closely with others in a team environment
Ability to interface with all customer levels.
Strong analytical and problem-solving skills
Strong analytical and problem-solving skills
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Original Posting:December 11, 2025For 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.
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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
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