Linux System Administrator (Active TS/SCI Clearance with Full Scope Polygraph Required)

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

Location: Annapolis Junction, MD

Employment Type: Full-Time

Clearance Requirement: Active TS/SCI with Polygraph

Salary Range: $118,000 – $142,000 / year (dependent on experience, education, and skill set)

About the Role

Seeking an experienced Linux System Administrator (Level 2) to provide comprehensive systems administration, operations, troubleshooting, and infrastructure support in Annapolis Junction, MD.

In this role, you will manage day-to-day operations and configurations across enterprise client, server, storage, network, and mobile systems. You will handle Tier 1 and Tier 2 escalations, execute server and workstation upgrades, perform physical hardware installations, optimize resource utilization, and maintain UNIX/Linux and Windows operating environments to maximize system reliability and performance.

Key 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.

Required Qualifications & Experience

Security Clearance: Active TS/SCI with a current Polygraph.

Experience & Education:

• Bachelor’s degree in a technical discipline from an accredited institution 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 (5 additional years substituting for the degree).

Linux Administration: Strong hands‑on experience administering CentOS 7, Rocky Linux 9, and Red Hat Enterprise Linux (RHEL 9).

Hardware & Operations: Proven experience handling physical server/workstation installations, system refreshes, and hardware troubleshooting.

Customer Processes: Demonstrated familiarity with Secure the Enterprise (STE) tasks and authorized data transfer workflows.

Desired Qualifications

• Red Hat Certified System Administrator (RHCSA) certification.
• Infrastructure task automation experience using Ansible.
• Experience with PXE network booting and provisioning virtual machines using Proxmox.
• Working knowledge of Identity Management (IDM) systems and IDM integration with CentOS LDAP servers.
• Hands‑on experience troubleshooting and configuring Transport Layer Security (TLS) certificates.
• Experience with Windows 10/11 administration and advanced Linux networking concepts.

Benefits & Compensation

• Comprehensive Health, Dental, and Vision Insurance
• Basic Life and Disability Insurance
• Paid Time Off (PTO) and Paid Holidays
• 401(k) Retirement Plan with Company Match
• Tuition Reimbursement for ongoing education and professional development

An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected under federal, state, or local law.