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Information Systems Security Engineer

GDIT

On-site
Fort Belvoir, VA
Full-time
Mid Level
2+ yrs
$108k–$146kPosted 20m ago

Real job — pulled straight from GDIT’s careers page · Verified October 7, 2026 · No reposts.

Job description

GDIT is hiring a Information Systems Security Engineer — a full-time, based in Fort Belvoir, VA role ($108k–$146k). Apply directly on GDIT's careers page below.

Information Systems Security Engineer (ISSE)

Location: USA VA Fort Belvoir

Time Type: Full time

Job Description

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Secret

Clearance Level Must Be Able to Obtain:

Top Secret

Public Trust/Other Required:

None

Job Family:

Cyber and IT Risk Management

Job Qualifications:

Skills:

Cybersecurity, Information Technology Security, System Security

Certifications:

None

Experience:

2 + years of related experience

US Citizenship Required:

Yes

Job Description:

Information Systems Security Engineer (ISSE)

We are seeking a mid-level Information Systems Security Engineer (ISSE) to support Assessment and Authorization (A&A) and Continuous Monitoring (ConMon) activities, ensuring compliance with Risk Management Framework (RMF) requirements across multi-level classification environments with diverse technologies and services.

At GDIT, people are our differentiator. As a ISSE you will help to ensure and provides cybersecurity for the development of software application using Software Security principles and adhering to DoD IA and IT Standards for all DTRA Defense Stockpile Management Systems (DSMS).


WHAT YOU WILL DO:

- Coordinate with other DSMS program teams, planning and create cybersecurity architecture and design documents for all DSMS cybersecurity architecture ensuring it is compliant with DoD and other organizational IA policies and guidance.

- Employing best practices when implementing security controls within an IS including software engineering methodologies, system/security engineering principle, secure design, secure architecture and secure coding techniques

- Developing cybersecurity architecture and design plans for communication and collaboration products, operating system platforms including servers, devices, management products, applications and overall security related to implementing these products.

- Providing security engineering support for accreditation of DSMS Networks

- Integrating cybersecurity expertise into lifecycle management, planning architecture and design management, migration and deployment, and system testing and implementation

- Researching, developing, testing, and documenting architectures and solutions for implementing new cybersecurity technologies to provide more seamless information collaboration and cybersecurity capabilities for the program and its user base.

- Developing and providing a criticality analysis of logic-bearing system components (e.g., hardware, firmware, and software) implementing, protecting, or introducing vulnerability(s) to each function

- Developing and updating mission criticality analysis(-es), vulnerability assessment(s), risk assessments(s), and identification and counter measurement implementation(s) for Mission- Critical Functions; ensuring updated assumptions, rationale and results related to the criticality analyses, vulnerability assessments, risk assessments, supply chain risk information, and risk mitigations are made available for Government review.


Assessment & Authorization (A&A):

  • Preparing and submitting Interim Authorization to Test (IATT) and Authority to Operate (ATO) requests with Plans of Action and Milestones (PoAMs)
  • Developing, maintaining, and coordinating required Body of Evidence (BoE) documentation for system assets
  • Collaborating across Technical Services and Security Services teams, as well as customer agency stakeholders, to ensure compliance
  • Tracking workflow for lien remediation/resolution activities and entering tracking tool updates
  • Evaluating system change requests and assessing both system and organizational risks associated with modifications

Continuous Monitoring (ConMon):

  • Executing ConMon activities within established timelines, including BoE collection and tracking tool updates
  • Conducting recurring reviews of system state and security posture to ensure that systems are being operated securely, and information systems security policies and procedures are being implemented as defined.
  • Providing recommendations for security control implementation and identifying necessary countermeasures or mitigating controls
  • Responding to queries and requests for security information and reports

Incident Response & Security Oversight:

  • Supporting investigations of security incidents and reporting findings as necessary
  • Assisting in the communication, implementation and enforcement of security policies and plans for data, applications, hardware, and telecommunications systems
  • Advising stakeholders on information assurance standards, dependencies, and emerging security technologies
  • Engaging with Enterprise Security Services tools (e.g., Trellix, ACAS) to track and remediate vulnerabilities and compliance deficiencies

WHAT YOU’LL NEED TO SUCCEED:
● Education: Bachelor of Arts/Bachelor of Science
● Required Experience: 2+ years of related experience
● Security Clearance Level: Secret clearance required.
● Location: On Customer Site


WHAT GDIT CAN OFFER:
● 401K with company match
● Comprehensive health and wellness packages
● Internal mobility team dedicated to helping you own your career
● Professional growth opportunities including paid education and certifications
● Cutting-edge technology you can learn from and apply to solve real world problems


#ARMA
 

The likely salary range for this position is $107,950 - $146,050. 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.

Scheduled Weekly Hours:

40

Travel Required:

Less than 10%

Telecommuting Options:

Onsite

Work Location:

USA VA Fort Belvoir

Additional Work Locations:

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. 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

gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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Frequently asked questions

What is the salary for Information Systems Security Engineer at GDIT?

The estimated salary range for Information Systems Security Engineer at GDIT is $108,000 - $146,000 USD per year.

What skills are required for Information Systems Security Engineer at GDIT?

The required skills for Information Systems Security Engineer at GDIT include: Cybersecurity.

What is the seniority level for Information Systems Security Engineer at GDIT?

Information Systems Security Engineer at GDIT is a Mid Level level position.

How do I apply for Information Systems Security Engineer at GDIT?

You can view the full description and apply for Information Systems Security Engineer at GDIT on EchoJobs: https://echojobs.io/job/gdit-information-systems-security-engineer-isse-1idzw.