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

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

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

401(k) matching

PTO

Job summary

J&T Business Consulting seeks a Systems Administrator 1 in Columbia, United States, to provide hands-on Linux administration and operational support in a mission-critical environment. You will handle command-line system management, monitoring, maintenance, and oversee data and messaging flows, resolving routine to moderately complex issues.

The role includes 6:00 AM – 6:00 PM business hours with 24/7 on-call rotation every 5–6 weeks and shift differential for on-call duty.

Qualifications

• Active TS/SCI with Polygraph clearance.
• Minimum of five (5) years of direct Linux systems administration experience.
• Solid command-line proficiency with Linux OS environments, troubleshooting utilities, and shell navigation.

Responsibilities

• Linux administration: daily OS management, user administration, and health checks using command-line tools.
• Monitor and manage data and messaging flows across core systems.

Skills

Linux

Shell navigation

Troubleshooting

Job description

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

Columbia, United States | Posted on 10/22/2026

Security Clearance: TS/SCI with Polygraph

Salary Range: $111,000 – $135,000

Role Overview

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.

Operations Coverage & Schedule

Business Hours: Coordinated team coverage spanning 6:00 AM – 6:00 PM on standard business days.

On-Call Rotation: 24/7 after-hours on-call support managed via a team rotation, typically serving as the primary on-call engineer once every 5–6 weeks.

Shift Differential: Additional compensation is provided for scheduled on-call duty and extended operational coverage.

Key Responsibilities

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.

Required Qualifications

Clearance: Active TS/SCI with Polygraph.

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.

Benefits & Compensation

Base Salary: $111,000 – $135,000, determined by experience, technical qualifications, and contract parameters.

Premium Pay: Dedicated compensation structure for on-call shifts and extended coverage hours.

Health & Wellness: Comprehensive medical, dental, and vision insurance options.

Retirement Planning: 401(k) plan with company matching.

Time Off: Paid Time Off (PTO), standard paid holidays, and paid parental leave.

Life & Disability: Employer-paid life insurance and short/long-term disability coverage.

Continuing Education: Tuition reimbursement programs to support skill building and technical certifications.