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Closed listing

General Dynamics Information Technology

Information Systems Security Engineer

Fairfax, VA, United States

The likely salary range for this position is $113,900 - $154,100.

This opening has closed.

The original listing is kept below for reference.

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Job details

Pay: The likely salary range for this position is $113,900 - $154,100.
Posting language: English
Posted: Oct 7, 2026

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Original job description

Archived listing. The details below describe a past opening.

Req ID: RQ229892

Type of Requisition: Regular

Clearance Level Must Be Able to Obtain: None

Public Trust/Other Required: Other

Job Family: Cyber and IT Risk Management

Skills:

GitHub Copilot,Information System Security,Security Tools

Experience:

5 + years of related experience

Job Description:

Seize your opportunity to make a personal impact as a Information Systems Security Engineer (ISSE). We are seeking a highly skilled Information Systems Security Engineer with over 5 years of experience in Application Modernization to join our dynamic team. The position will play a critical role in the modernization of the Delivery Operations Information System (DOIS) for the United States Postal Service (USPS). The Information Systems Security Engineer will ensure the security of the DOIS modernization project for USPS by implementing robust security measures and maintaining compliance with federal security standards. The individual will leverage AI tools such as GitHub Copilot for security automation and vulnerability management.

We are excited to welcome a motivated Information Systems Security Engineer who is passionate about creating exceptional user experiences and driving innovation in web development. Join us in shaping the future of our products and services through cutting-edge technology!

HOW AN INFORMATION SYSTEMS SECURITY ENGINEER WILL MAKE AN IMPACT:

Develop, implement, and maintain security policies, procedures, and controls in alignment with USPS’s security requirements and federal standards (e.g., FISMA, NIST RMF).
Utilize AI tools like GitHub Copilot to automate security tasks, vulnerability scans, and code reviews.
Conduct regular security assessments, vulnerability scans, and penetration testing using tools such as Nessus, Splunk, and SonarQube.
Implement and monitor security measures for sensitive data, ensuring compliance with encryption standards and access controls.
Work with development and operations teams to integrate security practices within CI/CD pipelines and DevSecOps processes.
Prepare and maintain security documentation, including System Security Plans (SSP), Risk Mitigation Plans (RMP), and Plan of Action and Milestones (POA&M).
Ensure continuous monitoring and real-time security incident response using tools such as CloudWatch, GuardDuty, and AWS Security Hub.
Collaborate with the USPS Chief Information Security Office (CISO) to ensure compliance with USPS’s security architecture and governance.
Provide security training and awareness programs to development and operational staff.

WHAT YOU’LL NEED TO SUCCEED:

Education :

Bachelor’s degree in Computer Science, Information Technology, Cyber Security, or related fields, preferred but not required.
If there is no relevant college degree, an additional 4 years of relevant work experience is required.

Required Experience :

5+ years of experience in information security engineering, with a strong focus on cloud security.
Experience with AI tools, particularly GitHub Copilot, for security automation and vulnerability management.
Strong understanding of federal security standards and compliance requirements (e.g., FISMA, NIST, FedRAMP).

Required skills :

Proficiency in security tools and frameworks (e.g., Nessus, Splunk, NIST RMF).
Excellent analytical, problem-solving, and communication skills.
Able to manage multiple tasks effectively and meet deadlines.
Ability to work collaboratively with developers, business analysts, and stakeholders.

Desired Skills:

Security Certifications (e.g., CISSP, CISM, AWS Certified Security - Specialty).
Experience in a USPS environment or similar federal IT projects.
Certification in cybersecurity (e.g., Certified Ethical Hacker (CEH)).

Location :

Remote

Security Clearance Level:

Must be able to obtain and maintain a Public Trust and successfully pass a thorough Government background screening process requiring the completion of detailed forms and fingerprinting
This position has a U.S. residency requirement. The USPS security clearance process requires the selected candidate to have resided in the U.S. (including U.S. Territories) for the last five years as follows: U.S. Citizens cannot have left the U.S. (including U.S. Territories) for longer than 6 months consecutively in the last 3 years (unless they meet certain exceptions). Non-U.S. Citizens cannot have left the U.S. (including U.S. Territories) for longer than 90 days consecutively in the last 3 years.

GDIT IS YOUR PLACE:

401K with company match
Comprehensive health and wellness packages
The internal mobility team is dedicated to helping you own your career
Professional growth opportunities include paid education and certifications
Cutting-edge technology you can learn from
Rest and recharge with paid vacation and holidays

The likely salary range for this position is $113,900 - $154,100. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. GDIT typically provides new employees with 15 days of paid leave per calendar year to be used for vacations, personal business, and illness and an additional 10 paid holidays per year. Paid leave and paid holidays are prorated based on the employee’s date of hire. The GDIT Paid Family Leave program provides a total of up to 160 hours of paid leave in a rolling 12 month period for eligible employees. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at https://gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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More about this job

Skills

Risk management
GitHub
Regulatory compliance
Security regulations
Web development
IMPACT
Penetration testing
Nessus
Splunk
SonarQube
Monitor security measures
CI/CD
Documentation
SSP
Incident response
AWS
Cybersecurity
Microsoft Office
Computer science
Computer technology
Problem solving
Communication skills
Meet deadlines
CISSP
CISM
AWS certification

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