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

401(k) plan with company matching

Paid time off

Job summary

J&T Business Consulting in Columbia, United States, is seeking a Systems Administrator 1 with TS/SCI Clearance and Polygraph to support mission-critical Linux environments. You will perform hands-on administration, monitor data and messaging flows, and rapidly resolve issues to uphold system uptime.

The role includes 6:00 AM–6:00 PM coverage on business days, a 24/7 on-call rotation every 5–6 weeks, and shift differential with on-call compensation.

Qualifications

• The active TS/SCI with Polygraph clearance is required.
• Minimum of five (5) years of direct Linux systems administration experience (no degree required).
• Solid command-line proficiency with Linux OS environments, troubleshooting utilities, and shell navigation.

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.

Skills

Linux

Command-line

Shell scripting

Job description

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

Columbia, United States | Posted on 10/28/2026

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.