System Administrator

Quest Oracle Community; Chantilly (VA); Hybrid; USD 92,000 - 167,000; Full time

Job summary

Leidos in Virginia is seeking a System Administrator to support IC in a lab and production environment. The role provides hands-on IT infrastructure support, system administration, and guidance to junior staff.

You will manage Linux RHEL and Windows Server deployments, patching, backups, monitoring, and security compliance under RMF/DIACAP; strong documentation and troubleshooting skills are essential. Experience with Cisco/Juniper networking, VMware vCenter, and Oracle servers is required.

Qualifications

• 12 years of experience or equivalent combination of work history and education.
• DoD 8570 IAT Level 2 compliance.
• Ability to analyze and resolve customer trouble calls with minimal supervision.
• Experience building and maintaining Linux RHEL and Windows Server environments.
• Experience with virtualization and network management tools.

Responsibilities

• Provide day-to-day system administration and performance optimization.
• Configure and operate information management systems and backups.
• Monitor hardware, servers, and key processes; review logs and reports.
• Guide and train junior staff; write technical documentation.
• Apply OS patches and manage services; perform capacity planning.
• Troubleshoot networking (Cisco/Juniper) and maintain network monitoring.
• Maintain security posture per RMF/DIACAP requirements.

Skills

Excellent writing skills

Troubleshoot networking equipment

System administration

Security monitoring

Patch management

Minimal supervision

Microsoft Office proficiency

Capacity planning

Analytical problem solving

Tools

MicroFocus/OpenText

HP Network Monitoring

Cisco/Juniper networking

VMware vCenter/ESXi

Oracle Servers

Linux RHEL

Windows Server

Job description

The Digital Modernization Sector at Leidos has an opening for a System Administrator to support the Intelligence Community in providing technical support for the customer’s system test and integration lab, and customer production environment. The System Administrator provides hand-on support for the IT infrastructure and technical assistance and support as needed to on-site administrators supporting the other two environments.

Description of Job Duties/Responsibilities:

• Excellent writing skills required for preparing documentation and other technical deliverables.
• Ability to troubleshoot Cisco and Juniper switches and routers.
• Uses MicroFocus/OpenText and HP Network Monitoring tools.
• Organizes and directs the configuration and operation of information management systems.
• Provides the day-to-day system administration to include system and resource optimization, and user assistance.
• Maintains servers and create and review monitoring reports and logs.
• Performs daily system monitoring, verifying the integrity and availability of all hardware, server resources, system and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.
• Provides hands-on guidance and training to. more junior staff.
• Applies OS patches for RHEL and Windows servers.
• Runs configuring/adding new services.
• Conducts ongoing performance tuning, hardware upgrades, and resource, and optimization, as required.
• Conducts CPU configuration, memory and disk partitions, as required.
• Performs regular security monitoring to identify vulnerabilities and any possible intrusions.
• Sets up and manages frequent and regular (at least daily) backup operations, ensuring that all required file systems and system data are successfully backed up to appropriate media, plus creates recovery tapes or disks; performs regular file archive and purge, as necessary.

Required Qualifications

• TS SCI CI poly
• Candidate must have 12 years of experience that can be a combination of work history and education. This equates to a Doctorate and 4 years, master’s and 6 years, bachelor’s and 8 years, associates and 10 years or HS diploma and 12 years.
• Compliance with Department of Defense (DoD) 8570 Information Assurance Technical (IAT) Level 2.
• Must be able to process and analyze information and trouble calls submitted by a customer (e.g., system administrator, developer, security specialist), make determinations, provide and implement solutions.
• Must be able to work with minimal supervision to perform complex technical tasks.
• Must be able to troubleshoot network routing and router/switches.
• Build and O&M of Linux RHEL systems, Build and O&M of MS Windows Server systems, Build and O&M of virtual environment that includes virtual servers and virtual routers, Build and O&M Oracle Servers.
• Build and O&M of multiple Network Management applications, Build and O&M of VCenter which includes the O&M of VM templates, Build and O&M of ESXi hosts, Build and O&M of hardware.
• Understanding of DoD Risk Management Framework (RMF) information security requirements, standards, and best practices; DIACP compliancy with Retina, DISA STIG and IAVA patch management.
• Perform multiple tasks concurrently and respond to emergency effectively.
• Proficient in use of Microsoft Office suite.
• Increase system administrator efficiency and accuracy via the use of automated tools and scripts, develop system administrator procedures, and conduct system administrator training and skills assessment
• Conduct capacity and performance analysis, and provides system configuration change and upgrade recommendations.
• Determine computer user needs; analyze system capabilities and programming techniques and controls.
• Manage the daily activities of configuration and operation of systems and perform system capacity analysis and planning.

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

August 26, 2026

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.

About 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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

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 at www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

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.