Linux Server Systems Administrator

Leidos is looking to fill a Linux Server Systems Administrator position to support the National Digital Exploitation & OSINT Center (NDOC). This role requires an individual that has technical experience with administering Linux servers within a physical and virtual environment. This role is responsible for interacting with administrators to handle service inquiries and problems. Duties include examining customer problems and implementing appropriate corrective action to initiate a repair or return to service. This role analyzes recurring problems and initiates solutions for preventing reoccurrence and analyzes existing infrastructure for tuning/performance enhancements. This Individuals in this role may be required to perform technical software configuration, rebooting, and other remedial actions on customer servers.

This is a 100% on-site position. All work must be performed at the customer site in Bethesda at the Intelligence Community Campus.

Primary Responsibilities

• Provide technical support, administration, and monitoring of Linux systems within a physical and virtual environment.
• Provide support for the implementation, troubleshooting and maintenance of IT systems.
• Rapidly distinguish isolated user problems from enterprise-wide application/system problems.
• Support operations, maintenance and troubleshooting for end user workstations, to include desktop applications.
• Coordinate with customers and stakeholders to collect data, conduct analysis, develop, and implement solutions associated with incident tickets and requirements.
• Seek opportunities for continuous improvement to support effective and efficient operations.
• Develop solutions to complex technical issues.
• Provide follow-up reports (technical findings, feedback, resolution steps taken) for Root Cause analysis, engineering technical assessment and process improvement initiatives.
• Support customer requirements in a dynamic, fast-paced environment. Provide on-call support during outages occurring after hours; may involve shift work.
• Update operations and monitoring documentation for 24/7/365 Operations Watch personnel.

Basic Qualifications

• Requires a Bachelor's degree and 8+ years of relevant experience. Additional years of relevant experience may be considered in lieu of a degree.
• System security engineering expertise in one or more of the following:
• System security design process
• Engineering life cycle
• Information domain
• Cross domain solutions
• Commercial off-the-shelf and government off-the-shelf cryptography
• Identification
• Authentication
• Authorization
• System integration
• Risk management
• Intrusion detection
• Contingency planning
• Incident handling
• Configuration control
• Change management
• Auditing
• Certification and accreditation process
• Principles of IA (confidentiality, integrity, non-repudiation, availability, and access control)
• Security testing
• Possesses and applies expertise on multiple complex work assignments. Assignments may be broad in nature requiring originality and innovation in determining how to accomplish tasks.
• Background in Linux or UNIX server setup, deployment and maintenance
• Experience using Red Hat Satellite Server and/or Spacewalk for patching and system management
• Experience with hardening Linux environments
• Experience with system administration of server operating systems such as Linux (RHEL, Rocky Linux, Oracle Linux, Ubuntu)
• Familiarity with supporting virtual desktops running Microsoft Windows
• Experience with configuration management tools such as Ansible, Salt, Puppet, Chef
• Experience with Scripting/Automation through Linux Shell scripts, PowerShell, PowerCLI, or other scripting languages
• Experience troubleshooting issues in a growing environment
• Experience with log reviews, incident analysis, and identification of issue trends
• Experience with server patch management methodologies
• Time management skills with the ability to work within an IT Service Management/ticketing system independently
• Ability to triage and properly classify incidents and prioritize work efforts accordingly
• Strong oral and written communications skills
• Experience establishing goals and plans that meet project objectives
• Track record of working effectively within a team, and support to peers toward improved processes and results
• Perform systems requirements analysis, functional analysis, timeline analysis, trade studies, requirements allocation and interface definition, technical management, integration, system testing, and quality assurance.
• Must be able to work independently to develop solutions to technical problems.

Certification and Clearance Requirements

• Certification relating to Linux such as Red Hat Certified System Administrator (RHCSA)
• Candidate must, at a minimum, meet DoDM 8140.03 (previously DoD 8570) - IT System Admin Intermediate certification requirements (Cloud+, GICSP, SSCP, Security+ CE, GSEC, or higher)
• Clearance
• Active TS/SCI clearance with Polygraph required
• OR active TS/SCI and willingness to get a Poly
• US Citizenship is required due to the nature of the government contracts we support.

Preferred Qualifications

• Knowledge of AWS or Azure cloud services and the cloud ecosystem
• Experience operating and maintaining systems in a Windows environment
• Certification relating to VMware (VCA/VCP)
• Experience with SAN or network storage setup and administration
• Experience working in an Agile environment
• Experience with troubleshooting within a security environment
• Experience with backup and restore procedures

About Leidos

If youre looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. Were already at step 30 - and moving faster than anyone else dares.

Original Posting

March 10, 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: $92,300.00 - $166,850.00

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.