Senior Linux Systems Administrator — TS/SCI Poly

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

Benefits offered by this job

Health Insurance

Life Insurance

Paid Time Off (PTO)

401(k) Retirement Plan with Company M​

Tuition Reimbursement

Job summary

J&T Business Consulting in Annapolis Junction, MD is seeking a Linux System Administrator (Level 2) with an active TS/SCI clearance to manage enterprise Linux/Windows environments, perform upgrades, and support secure data transfers. The role requires hands-on experience with CentOS 7, Rocky Linux 9, and RHEL 9, plus familiarity with Ansible, Proxmox, and TLS certificates.

The company offers comprehensive health, dental and vision insurance, life and disability coverage, PTO, a 401(k) match, and

Qualifications

• Bachelor’s degree in a technical discipline plus at least 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.

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, incident diagnosis, and issue resolution for client, server, storage, and network components.
• Execute hardware and software installations, system upgrades, and migrations for servers, workstations, and laptops.
• Support Secure the Enterprise (STE) requirements and customer-specific secure data transfer processes.
• Optimize system operations and resource allocation; perform ongoing system capacity planning and performance analysis.
• Manage ticket escalations, provide detailed technical feedback to stakeholders, and track hardware dispatch resolution workflows.
• Configure and maintain the integrity of network components and implement operating system enhancements.

Skills

Security clearance TS/SCI with Polylog

Linux system administration

Troubleshooting

Server hardware installations

Education

Bachelor’s degree in a technical discipline + 10 years experience

15 years experience without degree

Tools

CentOS 7

Rocky Linux 9

RHEL 9

Ansible

PXE network booting

Proxmox

LDAP IDM

TLS certificates

Windows 10/11 administration

Job description

J&T Business Consulting in Annapolis Junction, MD is seeking a Linux System Administrator (Level 2) with an active TS/SCI clearance to manage enterprise Linux/Windows environments, perform upgrades, and support secure data transfers. The role requires hands-on experience with CentOS 7, Rocky Linux 9, and RHEL 9, plus familiarity with Ansible, Proxmox, and TLS certificates.

The company offers comprehensive health, dental and vision insurance, life and disability coverage, PTO, a 401(k) match, and