Information Assurance System Security Engineer; ISSE III
Listed on 2026-02-16
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IT/Tech
Cybersecurity, Systems Engineer, Information Security, Network Security
Job Qualifications
Cybersecurity Policy, Information Systems Security Management, IT Network Security
Job DescriptionType of Requisition:
Regular
Clearance Level Must Currently Possess:
Top Secret/SCI
Clearance Level Must Be Able To Obtain:
Top Secret SCI + Polygraph
Public Trust/Other
Required:
None
Job Family:
Cyber and IT Risk Management
Skills:
Cybersecurity Policy, Information Systems Security Management, IT Network Security
Certifications:
None
Experience:
15 + years of related experience
US Citizenship
Required:
Yes
Transform technology into opportunity as an Information Assurance System Security Engineer (ISSE) III with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate.
At GDIT, people are our differentiator. As an ISSE III you will help ensure today is safe and tomorrow is smarter. The ISSE III is primarily responsible for conducting information system security engineering activities with a focus on lifecycle of current systems and future requirement scoping. The position will collect and process the captured information security requirements and ensures that the requirements are effectively integrated into information systems through purposeful security architecting, design, development, and configuration.
The position is an integral part of the development team designing and developing organizational information systems or upgrading legacy systems. The ISSE employs best practices when implementing security requirements within an information system including software engineering methodologies, system/security engineering principles, secure design, secure architecture, and secure coding techniques. This position’s main function is working within Special Access Programs (SAPs) supporting Department of Defense (DoD) agencies, such as HQ Air Force, Office of the Secretary of Defense (OSD) and Military Compartments efforts.
The position will provide “day-to-day” support for Collateral, Sensitive Compartmented Information (SCI) and Special Access Program (SAP) activities.
- Perform oversight of the development, implementation and evaluation of information system security program policy; special emphasis placed upon integration of existing SAP network infrastructures
- Perform analysis of network security, based upon the Risk Management Framework (RMF) with emphasis on Joint Special Access Program Implementation Guide (JSIG) authorization process
- Provides expert support, research and analysis of exceptionally complex problems, and processes relating to them
- Provides expert level consultation and technical services on all aspects of Information Security
- Serves as technical expert to the Cybersecurity Assessment Program providing technical direction, interpretation and alternatives to complex problems
- Builds IA into systems deployed to operational environments
- Assists architects and systems developers in the identification and implementation of appropriate information security functionality to ensure uniform application of DoD and other agencies security policy and enterprise solutions
- Enforce the design and implementation of trusted relations among external systems and architectures
- Assesses and mitigates system security threats/risks throughout the program life cycle
- Contributes to the security planning, assessment, risk analysis, risk management, certification and awareness activities for system and networking operations
- Thinks independently and demonstrates exceptional written and oral communications skills. Applies advanced technical principles, theories, and concepts
- Contributes to the development of new principles, concepts, and methodologies
- Works on unusually complex technical problems and provides highly innovative and ingenious solutions
- Lead a team of System Security Engineers and Certification and Accreditation Analysts responsible for ensuring the customers national and international security interests are protected as support equipment are designed and tested
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