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Leidos’ Defense is seeking a Information Junior Linux System Administrator to join our team at our Bowie, MD office.
The candidate will be part of a IT team responsible for the design, deployment, maintenance, configuration management, monitoring, and troubleshooting of an expanding wide area network supporting a multi-site secure network. The work to be performed will require that the candidate be able to work comfortably at several levels of support from supporting IT system administration tickets from installation, configuration, and troubleshooting of Linux workstations to servers’ equipment. Provide updates to the IT Manager and ISSM for strategic planning purposes.
Projects and tasks will be assigned and at times self-initiated requiring independent judgement in balancing of resources, schedules, work hours, as well as travel to regional sites to obtain results. Work will require ability to manage the risk for PC workstations and peripherals, and ancillary equipment.
If this sounds like the kind of environment where you can thrive, keep reading!
Leidos Defense Systems Sector provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions. To explore and learn more, click here!
Are you ready to make an impact? Share your resume with us today!
Primary Responsibilities:
The selected individual will be responsible for performing daily Linux system administration and O&M support activities in support of a local area network and wide area network environments. The position entails the daily sustainment of existing Linux computers and servers, with a particular focus on the set-up and maintenance. Will be responsible for monitoring infrastructure systems, applications, and processes, and for ensuring that all issues are identified, tracked, and resolved in a timely manner. He/she will provide support for all infrastructure systems and will respond to hardware and software incidents impacting local users as well as working with and taking directions from senior system administrators, at times working with them remotely from other locations.
Additional responsibilities include:
- Configuration, setup and maintenance of numerous air-gapped Information Systems (IS) and networks
- User account management, administration, access/controls and support.
- Installation, configuration, and management of servers and performance.
- Client-server support, Linux software packages and hardware upgrades.
- Provide regression testing on new software releases.
- Secure and maintain all components IAW established Security Technical Implementation Guides (STIG) and customer directives
- Verify and maintain security configuration of the multiple Information Systems
- Patch and anti-virus definition management
- Manage daily break/fix scenarios, updates, backups, monitoring and user management
- Hardware troubleshooting (COTS PC, printer, networks, and encryption hardware)
- Monitor IT tickets and tasking to ensure requirements are addressed in a timely manner according to priority
- Developing/documenting standard operating procedures.
- Endpoint Protection within Linux environment
- Strong desire to adhere to best practices and provide the highest quality of service and support
Basic Qualifications:
- Bachelors’ degree and 0-4 years of experience, Associate degree and 6-8 years or High School diploma and 8 or more years of experience may be considered in lieu of degree.
- Able to obtain within 6 months DoD 8140/8570 compliant IA certification for IAT II (Security+ CE or higher)
- Hands-on experience in Linux Server and workstation environments.
- Demonstrated understanding in the design, implementation, and sustainment of Virtualized Machine (VM) architecture
- Demonstrated understanding of system configuration and apply security controls under Risk Management Framework.
- Demonstrated understanding of computer network concepts (network hardware, cable management, IP address management).
- Working knowledge of Windows operating systems.
- Excellent customer service skills and clear communications both written and oral
- Comfortable working in an environment without immediate supervision
- Ability and willingness to work onsite in Bowie Maryland
- Active and current DoD Secret clearance. (U.S. citizenship is required)
Preferred Qualifications:
- Understanding of Linux software.
- Understanding of Risk Management Framework.
If you're looking for comfort, keep scrolling. 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:June 4, 2026For 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.
Skills Required
- Bachelors' degree and 0-4 years of experience or equivalent
- Able to obtain DoD 8140/8570 compliant IA certification for IAT II (Security+ CE or higher)
- Hands-on experience in Linux Server and workstation environments
- Demonstrated understanding of Virtualized Machine architecture
- Working knowledge of Windows operating systems
- Active and current DoD Secret clearance
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
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. Your most important work is ahead.


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