Linux Systems Administrator - TS/SCI with Poly (On-Call)

J&T Business Consulting; New York (NY); On-site; USD 111,000 - 135,000; Full time

Benefits offered by this job

Health insurance

401(k) match

Paid time off

Holidays

Parental leave

Life insurance

Disability coverage

Tuition reimbursement

Job summary

J&T Business Consulting in Columbia, United States, seeks a Systems Administrator 1 to support a mission-critical Linux environment. The role emphasizes hands-on command-line management, system monitoring, and maintenance across core services, with a focus on reliability and timely issue resolution.

Ideal candidates have TS/SCI with Polygraph, at least five years of Linux administration experience, and strong troubleshooting skills.

Qualifications

• Active TS/SCI clearance with Polygraph.
• Five+ years of Linux systems administration experience.
• Strong command-line proficiency in Linux environments and shell navigation.
• Ability to diagnose and resolve routine to moderately complex technical issues.

Responsibilities

• Perform daily Linux system administration and maintenance.
• Monitor data, application, and messaging flows across core systems.
• Diagnose and resolve hardware, software, and operational bottlenecks.
• Maintain system uptime by following procedures and responding to alerts.
• Document changes and coordinate with engineering teams during maintenance windows.

Skills

Linux administration

Command-line proficiency

System monitoring

Troubleshooting

Documentation

Education

No degree required

Job description

J&T Business Consulting in Columbia, United States, seeks a Systems Administrator 1 to support a mission-critical Linux environment. The role emphasizes hands-on command-line management, system monitoring, and maintenance across core services, with a focus on reliability and timely issue resolution.

Ideal candidates have TS/SCI with Polygraph, at least five years of Linux administration experience, and strong troubleshooting skills.