Senior Linux System Administrator - TS/SCI with Poly

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

Benefits offered by this job

Health, Dental, Vision Insurance

401(k) Retirement Plan with Company 匹配

PTO & Holidays

Tuition Reimbursement

Job summary

J T in Annapolis Junction, MD is seeking a Linux System Administrator (Level 2) to oversee enterprise Linux/Windows environments, perform upgrades, and manage Tier 1–2 escalations. The role requires active TS/SCI clearance with polygraph and strong hands-on Linux expertise.

You will handle server/workstation deployments, hardware installations, capacity planning, and secure data transfer workflows while coordinating with stakeholders to ensure high reliability and performance in a secure

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 equivalent).
• 15 years of relevant Systems Administration experience without a degree (5 additional years substituting for the degree).
• Experience administering Linux (CentOS, Rocky, RHEL) in enterprise environments.

Responsibilities

• Configure, patch, and maintain enterprise Linux (CentOS 7, Rocky 9, RHEL 9) and Windows OS.
• Provide Tier 1 and Tier 2 troubleshooting and incident diagnosis for server, storage, and network components.
• Execute hardware and software installations, system upgrades, and migrations for servers/workstations/laptops.
• Support Secure the Enterprise (STE) requirements and secure data transfer workflows.
• Optimize system operations and resource allocation; perform capacity planning and performance analysis.
• Manage ticket escalations and provide detailed feedback to stakeholders; track hardware dispatch resolutions.
• Configure and maintain network component integrity and implement OS enhancements.

Skills

Linux administration

CentOS 7

Rocky Linux 9

RHEL 9

Troubleshooting

System upgrades

Security clearance

STE processes

Ansible

Proxmox

Education

Bachelor's degree +10 years experience

15 years experience without degree

Tools

Ansible

Proxmox

PXE booting

LDAP IDM

TLS certificates

Job description

J T in Annapolis Junction, MD is seeking a Linux System Administrator (Level 2) to oversee enterprise Linux/Windows environments, perform upgrades, and manage Tier 1–2 escalations. The role requires active TS/SCI clearance with polygraph and strong hands-on Linux expertise.

You will handle server/workstation deployments, hardware installations, capacity planning, and secure data transfer workflows while coordinating with stakeholders to ensure high reliability and performance in a secure