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Linux System Administrator Security Clearance

Job in Winchester, Frederick County, Virginia, 22603, USA
Listing for: Mission Support and Test Services, LLC
Full Time position
Listed on 2026-01-20
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Administrator, IT Support, Unix/Linux
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: Linux System Administrator with Security Clearance

Linux System Administrator with Security Clearance

Position Overview

Provide administration, support, and operational excellence for Red Hat Enterprise Linux (RHEL) systems within a secure, mission‑critical environment. Assist in integrating and managing hybrid infrastructure leveraging AWS cloud services.

Key Responsibilities
  • Install, configure, patch, and maintain Red Hat Enterprise Linux (RHEL) systems in both virtualized and physical environments.
  • Manage AWS components such as EC2, ELB, Auto Scaling, and other relevant services.
  • Automate system tasks using Bash, Python, or similar scripting languages.
  • Implement security hardening, including system configuration baselines, vulnerability scanning, and mitigation — in compliance with federal mandates (STIGs, NIST).
  • Proactively monitor performance and availability; troubleshoot and resolve system, network, and AWS integration issues.
  • Manage user accounts, access controls, and authentication services.
  • Maintain detailed documentation in tools such as Jira and Confluence.
  • Participate in on‑call rotations to ensure high availability and rapid incident response.
Qualifications
  • 5+ years of RHEL/Linux system administration experience in enterprise or secure settings.
  • Hands‑on experience with AWS services (EC2, ELB, Auto Scaling, etc.).
  • Strong scripting skills (e.g., Bash, Python) for automation tasks.
  • Experience applying system hardening and security best practices.
  • Ability to troubleshoot system and network issues across Linux and cloud environments.
  • Top Secret clearance (SCI eligibility and willingness to obtain CI poly).
Seniority Level

Mid‑Senior level

Employment Type

Full‑time

Job Function

Information Technology

Industries

Government Administration

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