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

Tuition Reimbursement

Paid Time Off and Holidays

Job summary

J T is seeking an experienced Linux System Administrator (Level 2) in Annapolis Junction, MD, to provide comprehensive systems administration and infrastructure support. The role covers enterprise Linux and Windows environments, with Tier 1/2 support, hardware installations, and secure data transfer workflows.

The ideal candidate has an active TS/SCI clearance with polygraph, a technical degree or equivalent experience, and hands-on expertise with Linux, servers, and virtualization technologies.

Qualifications

• Active TS/SCI clearance with a current Polygraph.
• Bachelor’s degree plus 10+ years of Systems Administration experience, or 15 years without a degree.
• Hands-on Linux administration across CentOS 7, Rocky Linux 9, RHEL 9.
• Experience with hardware installs, upgrades, and STE data transfer workflows.

Responsibilities

• Configure and maintain Linux (CentOS 7, Rocky 9, RHEL 9) and Windows OSes.
• Handle Tier 1/2 troubleshooting, incidents, and escalations.
• Perform hardware/workstation/server installations and migrations.
• Support Secure the Enterprise (STE) secure data transfer processes.
• Optimize resources and perform capacity planning and performance analysis.
• Manage ticket escalations and provide feedback to stakeholders.
• Ensure network components and OS improvements are in place.

Skills

TS/SCI clearance

Linux system administration

Windows environments

Server hardware installs

Education

Bachelor’s degree in technical discipline

15 years experience without a degree

Tools

Ansible

PXE provisioning

Proxmox

LDAP/IDM integration

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

This position offers a comprehensive benefits package designed to support employees both personally and professionally:

• 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.