Information Systems Security Engineer - TS/SCI with Polygraph

Information Systems Security Engineer

• TS/SCI with Polygraph

Req ID:

RQ219439

Type of Requisition:

RegularClearance Level Must Be Able to

Obtain:

Top Secret SCI +

PolygraphPublic Trust/Other Required:

NoneJob Family:

Cyber and IT Risk ManagementSkills:

Accreditation Standards,Information Assurance,Information Technology Security,Risk Management Framework,Security RequirementsExperience:

10 + years of related experience

US Citizenship Required:

YesJob Description:

INFORMATION SYSTEMS SECURITY ENGINEER

(ISSE)YOUR IMPACTOwn your opportunity to support national defense. Your work will help keep critical operations secure and connected across the global enterprise directly, contributing to a mission that protects our nation every day.

CIS is growing, and we invite both our experienced incumbents and new team members to be part of what's next. Incumbents bring invaluable mission insight, while new talent adds fresh ideas and energy. Together, we'll strengthen continuity and drive the next generation of innovation.

MEANINGFUL WORK AND PERSONAL

IMPACTAs an Information Systems Security Engineer (ISSE) supporting CIS, you will provide security engineering expertise across the design, development, accreditation, and transition of enterprise infrastructure and services. You will shape secure architecture, ensure proper implementation of security controls, and guide systems through the full lifecycle of engineering and authorization. Your work directly strengthens the security posture, resilience, and readiness of mission critical technologies.

KEY RESPONSIBILITIES

• Perform security engineering throughout the system lifecycle, including requirements analysis, security control selection, tailoring, and documentation
• Develop security design inputs for engineered solutions, including architecture artifacts, auditing plans, monitoring strategies, and secure configuration baselines
• Prepare RMF security documentation, including security plans, control implementation descriptions, test plans, and accreditation artifacts
• Coordinate with engineering teams to integrate security into solution architectures, ensuring compliance with applicable security policies, frameworks, and control baselines
• Support development and validation of system test plans, security assessments, and control verification activities for new technologies and major upgrades
• Collaborate with operations, engineering, and project teams to guide secure implementation, identify risks, recommend mitigations, and ensure adnce to approved security controls
• Review and refine security documentation, including diagrams, hardware/software inventories, control traceability, and lifecycle sustainment plans
• Provide technical expertise during engineering reviews, transition planning, and pre-deployment activities to ensure secure configuration and accreditation readiness
• Contribute to continuous improvement of security engineering standards, templates, and processes across the enterprise

WHAT YOU'LL NEED TO SUCCEED

• EDUCATION:

  Bachelor's degree in an IT-related field, or 10-12+ years of relevant IT experience in lieu of a degree

• CERTIFICATION

  Meet DoD 8140 Information Assurance Workforce certification requirements (e.g., CISSP, etc.

• CLEARANCE

  Active TS/SCI clearance with a favorable polygraph
• Hands-on experience applying the Risk Management Framework (RMF), including security control selection, tailoring, assessment, and documentation
• Strong understanding of enterprise infrastructure components (server, network, storage, virtualization, cloud) and their security requirements
• Experience developing security design artifacts, accreditation packages, test plans, and technical documentation
• Ability to collaborate with engineering, operations, and cybersecurity teams to integrate security controls into system architectures
• Strong analytical skills with the ability to identify risks, recommend mitigations, and validate secure configurations
• Excellent communication and documentation skills, with the ability to translate technical security requirements into clear engineering guidance
• US citizenship required

•

LOCATION

Onsite

GDIT IS YOUR

PLACEAt GDIT, the mission is our purpose, and our people are at the center of everything we do.

Growth:

AI-powered career tool that identifies career steps and learning opportunities

Support:

An internal mobility team focused on helping you achieve your career goals

Rewards:

Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off

Community:

Award-winning culture of innovation and a military-friendly workplace

OWN YOUR

OPPORTUNITYExplore an enterprise IT career at GDIT and you'll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.#CISThe likely salary range for this position is $169,604

• $229,464.

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.

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 w 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.

We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 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 capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

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Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans