Network Defense Analyst (ISSO)

Network Defense Analyst (ISSO)

ID: 2026-79060

US-VA-Ft Belvoir

Required Clearance: TS/SCI, acquire TS/SCI with Polygraph clearance within reasonable amount of time after hire

Posted Date: 11/11/2026

Category: Engineering-Other

Employment Type: Full Time

Hiring Company: General Dynamics Mission Systems, Inc.

Basic Qualifications

Master's degree. Bachelor's degree in a related specialized area or equivalent relevant experience is required, plus a minimum of 2 years of relevant experience; or

CLEARANCE REQUIREMENTS:

Department of Defense TS/SCI security clearance required at time of hire. Applicant must be able to acquire clearance level to TS/SCI with Polygraph in a reasonable amount of time after 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

As the Advanced IT Security Specialist working as part of the Cyber Team as an Network Defense Analyst (ISSO), well rely on you to apply defensive functions (e.g., encryption, access control, identity management) to reduce exploitation opportunities of vulnerabilities, as well as conduct import/export reviews for acquiring cryptographic systems. Youll also apply current computer science technologies to the design, development, evaluation, and integration of computer systems and networks to maintain system security. Are you ready to make a difference?

What youll experience:

• Technologies that arent just top-notch, theyre often top-secret
• A team of bold thinkers committed to exploring whats next
• Opportunities to gain new knowledge - as its discovered
• Overseeing the Cyber lifecycle, including risk management, vulnerability analysis, and continuous monitoring.
• Ensuring compliance with government security requirements and DoD policies.
• Utilizing tools like Splunk, Nessus, and VMware for security monitoring and analysis.
• Conducting hands-on reviews and maintaining security configurations.

What you bring to the table:

• Proficiency in Linux and Windows operating systems.
• Experience with Risk Management Framework (RMF) and vulnerability analyses.
• Familiarity with IT government security standards like JSIG, ICD 503, NISPOM, NIST, and DIACAP.
• Ability to provide RMF support and conduct security certification tasks.
• Experience with Incident Response procedures and reports.
• Experience with preparing, reviewing, and submitting Cybersecurity documentation for classified programs.

What sets you apart:

• Strong technical knowledge of Linux and Windows commands and utilities.
• Previous experience working and supporting a JSIG policy managed environment.
• Expertise in security tools such as SCAP Compliance Checker, ACAS Scans, and SPLUNK.
• In-depth understanding of government IT security policies and directives.
• Hands-on experience with security accreditation and certification processes.
• Ability to ensure all security IA service requirements are met.

Required:

Current CISSP certification preferred or other DoD 8570.1/8140 IAM-II or IAT-II or above certification day one on contract.

Education Requirements:

Bachelor's degree in a related specialized area or equivalent is required plus a minimum of 2 years of relevant experience; or Master's degree plus a minimum of 0 years of relevant experience

Clearance Requirements:

This position requires an active TS/SCI security clearance. Must be willing and able to obtain a polygraph within a reasonable amount of time after hire, with acceptable timing determined by manager. 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.

Workplace Options: Fully 100% on-site

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 $90,359.00 - USD $97,771.00 /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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