Senior Linux Systems Administrator — TS/SCI with Poly

J&T Business Consulting; Annapolis (MD); On-site; USD 118,000 - 142,000; Full time

Job summary

J&T Business Consulting in Annapolis Junction, MD is seeking an experienced Linux System Administrator (Level 2) with active TS/SCI clearance and polygraph to support enterprise clients. You will manage day-to-day operations across Linux and Windows environments, perform upgrades, and troubleshoot incidents.

This role requires strong hands-on experience with CentOS 7, Rocky 9, and RHEL 9, hardware installations, STE processes, and effective communication with stakeholders.

Qualifications

• Bachelor’s degree in a technical discipline plus 10+ years of Systems Administration experience on programs/contracts of similar scope and complexity, OR
• 15 years of relevant Systems Administration experience without a degree (additional years substituting for the degree).
• Linux administration including CentOS 7, Rocky Linux 9, and Red Hat Enterprise Linux 9.
• Experience with hardware installations, system refreshes, and STE secure data transfer workflows.

Responsibilities

• Configure, manage, patch, and maintain enterprise Linux (CentOS 7, Rocky 9, RHEL 9) and Windows operating systems.
• Provide Tier 1 and Tier 2 troubleshooting for client, server, storage, and network components.
• Execute hardware and software installations, system upgrades, and migrations for servers and workstations.
• Support STE requirements and customer-specific secure data transfer processes.
• Optimize system operations and resource allocation; perform capacity planning and performance analysis.
• Manage ticket escalations and communicate technical feedback to stakeholders.

Skills

Linux Administration

Windows Administration

Troubleshooting

Server Management

Education

Bachelor's degree in a technical discipline

15 years of relevant Systems Administration experience without a degree

Tools

Ansible

Proxmox

PXE booting

IDM

TLS certificates

VLAN/Networking

Job description

J&T Business Consulting in Annapolis Junction, MD is seeking an experienced Linux System Administrator (Level 2) with active TS/SCI clearance and polygraph to support enterprise clients. You will manage day-to-day operations across Linux and Windows environments, perform upgrades, and troubleshoot incidents.

This role requires strong hands-on experience with CentOS 7, Rocky 9, and RHEL 9, hardware installations, STE processes, and effective communication with stakeholders.