IT System Administrator

Responsibilities for this Position

IT System Administrator

ID: 2026-71592
US-AZ-Scottsdale US-VA-Chantilly US-CA-San Jose US-PA-Pittsburgh
Required Clearance: TS/SCI with Polygraph
Posted Date: 3/20/2026
Category: Information Technology
Employment Type: Full Time
Hiring Company: General Dynamics Mission Systems, Inc.


Basic Qualifications

Bachelors degree in a related specialized area or equivalent is required plus a minimum of 5 years of relevant experience; or Master's degree plus a minimum of 3 years of relevant experience.

CLEARANCE REQUIREMENTS:

Department of Defense TS/SCI security clearance with Polygraphis required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.

Responsibilities for this Position

At General Dynamics Mission Systems, we create the technologies, products and services that help our nations heroes keep our nation safe. The work we do is so advanced, we are continuously moving the boundaries of whats possible. Here youll work with the best and your talent will be front and center on projects that impact the world. Are you up to the challenge?

We apply advanced technologies such as Artificial Intelligence, Blockchain, AR/VR, Cloud Native and Quantum Physics to solve our customers missions in cyber, RF, undersea, interstellar and everything in between.

General Dynamics Mission Systems currently has a career opportunity for an IT System Administrator for our Restricted Ground Systems. As a member of our Information Assurance Security team, youll support the Information System (IS) Risk Management Framework activities from categorizing systems and preparing IS packages, to reviewing vulnerability scans, executing Change Control processes, and supporting upgrades of systems during program execution. The IT System Admin maintains the day-to-day security posture and continuous monitoring of Information Systems for DoD security programs, and includes security event & information management review and analysis, end user account audits, etc.Are you ready to make a difference?

What you bring to the table:

• RHEL (Red Hat Enterprise Linux) & Windows Administration Experience
• Experience with various system security assessment/hardening tools - SCAP Compliance Checker, STIG Viewer, ACAS/Nessus, etc.
• Trained and proficient in Assured File Transfer (AFT) procedures
• Self-starter with the ability to operate independently with minimal supervision
• Install and configure servers
• Understanding of STGs & Vulnerability resolution

What sets you apart:

• Outstanding communications skills
• Ability to work collaboratively in a cross-functional team throughout the system life cycle
• DoD 8570 Certification meeting IAM Level I (e.g., Security + CE, CAP, GSLC)
• Adjudicated polygraph
• Cleared TS/ SCI

The qualified IT System Administrator candidate shall:

• Perform weekly system audit reviews, media reviews, hardware/software configuration management
• Perform monthly scans and coordinate with team members to adjudicate results
• Execute security testing and evaluation to ensure correct implementation of security controls
• Support the assessment and mitigation of vulnerabilities throughout a systems life cycle
• Perform incident response and cleanup actions when necessary per company or customer directions
• Ensure systems are operated, maintained, and disposed of in accordance with internal security policies and procedures outlined in the System Security Plan (SSP)

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Salary Note

This estimate represents the typical salary range for this position based on experience and other factors (geographic location, etc.). Actual pay may vary. This job posting will remain open until the position is filled.

Combined Salary Range

USD $111,881.00 - USD $124,118.00 /Yr.

Company Overview

General Dynamics Mission Systems (GDMS) engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation. With a global team of 12,000+ top professionals, we partner with the best in industry to expand the bounds of innovation in the defense and scientific arenas. Given the nature of our work and who we are, we value trust, honesty, alignment and transparency. We offer highly competitive benefits and pride ourselves in being a great place to work with a shared sense of purpose. You will also enjoy a flexible work environment where contributions are recognized and rewarded. If who we are and what we do resonates with you, we invite you to join our high-performance team!

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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General Dynamics Mission Systems is a technology integrator and original equipment manufacturer that provides mission critical solutions across ground, sea, air, space and cyberspace.

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