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# Systems Administrator 1 (TS/SCI Clearance With Full Scope Polygraph Required)

- **Company:** J&T Business Consulting
- **Location:** Columbia, MD, United States
- **Experience:** Expert
- **Salary:** $111,000.0 - $135,000.0
- **Contract:** Permanent contract
- **Skills:** Command-Line Interface, Linux, Document Management Systems, Monitoring of Systems, Linux System Administration, System Availability, User Administration
- **Published:** October 21, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=a29036fd3c7c00bd

## About the Role

The System Administrator 1 provides hands-on Linux administration and operational support within a mission-critical enterprise environment. This role is responsible for command-line system administration, system monitoring, routine maintenance, and managing application, data, and messaging flows. The ideal candidate brings solid Linux troubleshooting experience and the ability to independently resolve routine to moderately complex technical issues., * Clearance: Active TS/SCI with Polygraph.

 * Certification: Active DoD 8570/8140 IAT Level I certification (e.g., A+ CE, CCNA-Security, Network+ CE, SSCP).
 * Experience: Minimum of five (5) years of direct Linux systems administration experience (no degree required).
 * Technical Proficiency: Solid command-line proficiency with Linux OS environments, troubleshooting utilities, and shell navigation.

## Description

* Linux Administration: Perform daily operating system management, maintenance, user administration, and system health checks using command-line tools.
 * Data & Message Flows: Monitor, manage, and verify application, data, and messaging pipeline performance across core systems.
 * Troubleshooting & Issue Resolution: Investigate, diagnose, and resolve technical hardware, software, and operational bottlenecks.
 * System Availability: Ensure mission system uptime by adhering to operational procedures and responding promptly to system alerts and downtime incidents.
 * Documentation & Coordination: Document system modifications, track recurring issues, and collaborate with engineering peers during handoffs and scheduled maintenance windows.