Linux Systems Admin (TS/SCI) - On-Call, PTO & Tuition

J T; Columbia (MD); On-site; USD 111,000 - 135,000; Full time

Benefits offered by this job

Health insurance

Dental & vision insurance

401(k) matching

Paid time off

Holidays

Parental leave

Life insurance

Disability insurance

Tuition reimbursement

Job summary

J T in the United States is seeking a System Administrator I to provide hands-on Linux administration in a mission-critical environment. You will perform daily system management, monitoring, and maintenance, ensuring secure and reliable data and messaging flows.

The role requires 5+ years of Linux experience, TS/SCI with Polygraph clearance, and strong troubleshooting skills. On-site coverage with on-call rotation and shift differentials support a 6:00 AM–6:00 PM schedule.

Qualifications

• 5+ years of direct Linux systems administration experience.
• Active TS/SCI with Polygraph clearance.
• No degree required.
• Strong Linux troubleshooting skills.

Responsibilities

• Perform daily Linux system administration and health checks.
• Monitor data and messaging pipeline performance across core systems.
• Troubleshoot hardware, software, and operational bottlenecks.
• Ensure system uptime by following procedures and handling alerts.
• Document changes and coordinate maintenance with engineering during windows.

Skills

Linux administration

Command-line proficiency

Troubleshooting

System monitoring

Documentation

Tools

Shell scripting

SSH/remote access

Logging/monitoring tools

Job description

J T in the United States is seeking a System Administrator I to provide hands-on Linux administration in a mission-critical environment. You will perform daily system management, monitoring, and maintenance, ensuring secure and reliable data and messaging flows.

The role requires 5+ years of Linux experience, TS/SCI with Polygraph clearance, and strong troubleshooting skills. On-site coverage with on-call rotation and shift differentials support a 6:00 AM–6:00 PM schedule.