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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!

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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, 2026

Pay Range:

Pay Range $59,150.00 - $106,925.00

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.