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# System Administrator

- **Company:** CareerCircle
- **Location:** Arlington, VA, United States
- **Salary:** $92,300.0 - $166,850.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Artificial Intelligence, Backup Devices, Bioinformatics, Cipher, Cyber Security, System Configuration, Dynamic Host Configuration Protocol, Linux, Disaster Recovery, File Systems, VMware ESX Servers, Monitoring of Systems, Hyper-V, Information Management, Integrated Development Environments, IP Addressing, IP Address Management, Network Troubleshooting, Machine Learning, Microsoft Office, Windows Servers, NetBackup, Network Monitoring, Network Administration, Oracle (Applications), Oracle SQL Developer, Performance Tuning, Red Hat Enterprise Linux, Salesforce.Com, SAP (Applications), Web Application Security, Server Administration, Server Virtualization, Software Systems, System Testing, Virtualization Technology, Software Vulnerability Management, Backup and Restore, Network Switches, Network Routing, Network Routers, Computer Network Technologies, Virtual Environment, Juniper, Information Technology, OpenText, Vcenter, Patch Management, Routing & Switching, Microfocus, Network Server, Cisco, Vmware
- **Published:** September 3, 2026
- **Apply:** https://www.careercircle.com/jobs/all/all/usa/va/chantilly/04baac41-f485-451a-b62d-eeadb89fea63

## About the Role

* 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.

## Description

Retina
Equities
Templates
Operations
Automation
Market Data
Micro Focus
File Systems
System Testing
VMware vCenter
Network Routing
Virtual Routers
Ancient History
Microsoft Office
Network Switches
Operating Systems
Technical Support
Microsoft Windows
System Monitoring
IT Infrastructure
Performance Tuning
Network Management
VMware ESX Servers
Network Monitoring
Virtual Environment
Performance Analysis
System Configuration
System Administration
Information Assurance
Information Management
Development Environment
Network Troubleshooting
Red Hat Enterprise Linux
Risk Management Framework
Juniper Network Technologies
Security Requirements Analysis
Troubleshooting (Problem Solving)
Top Secret-Sensitive Compartmented Information (TS/SCI Clearance), 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., * 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., 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.
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