$74.7K – $118.1K/yr
Information System Security Engineer (ISSE) Senior - Top Secret Clearance Required
Role overview
Job description
Agile Defense is seeking a skilled Information System Security Engineer (ISSE) to support the FBI under Objective 2: ISSO/ISSE Program Management. The ISSE will provide technical security engineering expertise to help develop, implement, and sustain a methodology for categorizing FBI IT systems based on architecture, complexity, hosting environment, security posture, and mission requirements.
This role supports the technical analysis needed to differentiate systems by risk, technology stack, overlays, and operational dependencies, and to ensure those categorizations effectively inform labor allocation, reporting, and cost recovery. The ISSE will work closely with ISSOs, system owners, architects, and program leadership to maintain a scalable and compliant categorization framework aligned with FBI and federal standards.
Key Responsibilities:
Architecture and technology stack
Security classification level
FIPS-199 impact level
National Security System designation
Hosting environment (on-premises, Azure, AWS)
CNSS 1253 overlays
Data sensitivity and data types
Mission/business function
System complexity and integration dependencies
Security architecture reviews
Control implementation analysis
Inheritance considerations
Boundary analysis
System interconnection analysis
Technical documentation support
Support continuous improvement of the categorization framework as new technologies and requirements emerge.
- Active Top Secret clearance required.
- Experience assessing complex systems for security architecture, control implementation, and risk categorization.
- Strong knowledge of:
- FIPS-199
- NIST SP 800-37
- NIST SP 800-53
- CNSS 1253
- RMF
- System security engineering principles
- Experience with on-premises and cloud environments, including Azure, AWS, or hybrid enterprise systems.
- Experience supporting technical security documentation and system authorization packages.
- Ability to analyze diverse technical architectures and map findings to staffing, security, and compliance requirements.
- Strong communication skills with the ability to explain technical issues to technical and non-technical stakeholders.
- Experience supporting FBI, DOJ, DoD, IC, or other federal national security customers.
- Experience with classified systems, cross-domain solutions, or National Security Systems.
- Experience using GRC platforms or structured repositories for system and security data.
- Familiarity with automation, workflow orchestration, or reporting tools supporting cybersecurity operations.
About this listing
- Source: Agile Defense's official careers site (via Lever) · last confirmed on the source 29 Oct 2026
- Posted 6 Oct 2026
Jobiba does not charge job seekers. Never pay to apply or share OTPs, card or bank details.
What they are looking for
Skills & requirements
Qualification
Bachelor's degree in Information Security, Engineering, or related field; 8+ years of experience, or equivalent relevant work experience; e.g., each year of work experience may be substituted for each year of education required
Department · Cybersecurity
Hiring company
Agile Defense
At the forefront of innovation, driving advanced capabilities and solutions tailored to the most critical national security and civilian missions.
Related opportunities
Similar active roles
Relevant, currently active roles for this market.
$192K – $260K/yr
$160.5K – $236.3K/yr
$160.5K – $236.3K/yr
🔔 Get job alerts
New Information System Security Engineer Senior jobs in Washington, D.c., straight to your inbox.
No spam · Unsubscribe anytime