Information System Security Engineer

About Agile Defense   At Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next.   Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests.
Requisition #: 1914 Job Title: Information System Security Engineer (ISSE) Location: Washington, D.C.  Clearance Level: TS with SCI eligibility required to start Required Certification(s): One of the following: CISSP, CASP+, CISM, CCSP, CAP, or AWS/Azure security certifications

Job Description

Agile Defense is seeking a skilled Information System Security Engineer (ISSE) to support the FBI under 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  

• Support design and maintenance of a methodology to categorize FBI IT systems based on:
  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
• Assess system architecture, interfaces, hosting models, and security control implications to help determine appropriate ISSO/ISSE support levels.
• Analyze traditional, hybrid, and cloud-based systems to distinguish technical support requirements.
• Support accurate grouping of systems based on risk, operational impact, engineering effort, and compliance obligations.
• Translate technical system attributes into labor mapping recommendations aligned to ITSSS labor categories and seniority levels.