Senior Linux System Admin (TS/SCI+Poly) – Annapolis

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

Benefits offered by this job

Health, Dental, Vision Insurance

401(k) with company match

PTO & Paid Holidays

Tuition Reimbursement

Job summary

J&T Business Consulting is seeking a Linux System Administrator at the senior level with an Active TS/SCI clearance and polygraph requirement. The role is based in Annapolis Junction, MD, supporting enterprise Linux/Windows environments and tiered IT operations.

Responsibilities include configuring and patching Linux/Windows systems, performing upgrades, and ensuring STE compliance. Candidates should have 10+ years of systems administration experience with strong CentOS/RHEL/ Rocky Linux skills

Qualifications

• Bachelor’s degree in a technical discipline plus 10+ years of Systems Administration experience on similar scope, or 15 years without a degree.
• Strong hands‑on Linux administration across CentOS 7, Rocky Linux 9, and RHEL 9.

Responsibilities

• Configure, manage, patch, and maintain enterprise Linux and Windows operating systems.
• Provide Tier 1 and Tier 2 troubleshooting, incident diagnosis, and resolution for client/server/storage/network components.
• Execute hardware and software installations, system upgrades, and migrations for servers and workstations.
• Support Secure the Enterprise (STE) requirements and customer data transfer processes.
• Optimize system operations and perform capacity planning and performance analysis.
• Manage ticket escalations and provide technical feedback to stakeholders.
• Configure and maintain network components and OS security enhancements.

Skills

Linux admin

CentOS 7

Rocky Linux 9

RHEL 9

Ansible

Proxmox

TLS certificates

IDM

Windows admin

Education

Bachelor’s degree in a technical discipline

15 years of relevant Systems Admin experience without a degree

Tools

Proxmox

Ansible

Job description

J&T Business Consulting is seeking a Linux System Administrator at the senior level with an Active TS/SCI clearance and polygraph requirement. The role is based in Annapolis Junction, MD, supporting enterprise Linux/Windows environments and tiered IT operations.

Responsibilities include configuring and patching Linux/Windows systems, performing upgrades, and ensuring STE compliance. Candidates should have 10+ years of systems administration experience with strong CentOS/RHEL/ Rocky Linux skills