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Senior Systems Administrator; Unix​/Linux Security Clearance

Job in Dahlgren, King George County, Virginia, 22448, USA
Listing for: Astrion
Full Time position
Listed on 2026-07-23
Job specializations:
  • IT/Tech
    Unix/Linux, Systems Administrator, Cybersecurity, Network Security
Salary/Wage Range or Industry Benchmark: 130000 - 145000 USD Yearly USD 130000.00 145000.00 YEAR
Job Description & How to Apply Below
Position: Senior Systems Administrator (Unix/Linux) with Security Clearance

Overview

Senior Systems Administrator (Unix/Linux)

Job Location:

Dahlgren, Virginia

Job Status:
Full Time

Clearance:
Top Secret

Travel: less than 10%

Salary: $130,000 to $145,000

Astrion has a contingent opening for a Senior Systems Administrator (Unix/Linux) supporting the U.S. Navy's Naval Surface Warfare Center Dahlgren Division (NSWCDD), located in Dahlgren, VA. As a Senior Systems Administrator (Unix/Linux) you will oversee the administration, configuration, and security of Unix and/or Linux network environments and software systems. This role maintains system resilience through lifecycle infrastructure management, handling everything from hardware deployment and COTS software integration to advanced network optimization and security administration.

At the highest tier of technical trust, the role works to secure environments against modern vulnerabilities and attacks while optimizing multi‑environment systems for maximum resource efficiency.

Required Qualifications and Skills
  • Six (6) years of professional experience in Unix and/or Linux system administration of networks and software systems
  • Experience in system backup and recovery; basic software management; security management and library management; installation and configuration of hardware; operational systems and COTS software; operating computer systems in different operating environments; and sizing, performance, tuning, hardware/software/network troubleshooting and resource allocation.
  • Qualified experience in different network protocols including TCP/IP and major network security tools such as firewalls, knowledge of computing and networking vulnerabilities, attack methods and latest detection methods.
  • This position is required to be designated as IAT III level with a T5.
  • Applicants must have an active TOP SECRET clearance
Preferred Qualifications and Skills
  • Master's level degree in Electrical/Electronic/Computer Engineering, Computer Science, or Information Systems.
  • CompTIA Security+, CompTIA CySA+, or CCNA #CJ
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Position Requirements
10+ Years work experience
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