Information System Security Officer (ISSO) - Senior - Top Secret Clearance Required

Agile Defense is seeking an experienced Information System Security Officer (ISSO) to support the FBI under Objective 2: ISSO/ISSE Program Management. The ISSO will support the development, implementation, and ongoing refinement of a methodology for categorizing and organizing FBI information technology systems based on security, operational, and mission-related factors.

This role will help ensure systems are consistently grouped according to attributes such as classification level, FIPS-199 categorization, hosting environment, CNSS 1253 overlays, data types, and business function. The ISSO will also support labor mapping, chargeback/cost recovery reporting, and documentation requirements associated with the call order.

The ideal candidate will bring experience in federal cybersecurity compliance, risk management, RMF, GRC tools, and stakeholder coordination in a complex, mission-driven environment.

Key Responsibilities:

- Support development and maintenance of a documented methodology to categorize FBI IT systems based on:

- Classification level

- FBI division supported

- National Security System designation

- FIPS-199 impact level

- Hosting location (on-premises, Azure, AWS)

- CNSS 1253 overlays

- Data types managed

- Mission/business function

- Other evolving policy or operational criteria

- Apply the methodology across assigned systems in accordance with task order timelines.

- Ensure methodology aligns with applicable standards and guidance, including:

- FIPS-199

- NIST RMF and related NIST publications

- CNSS policies and overlays

- FBI internal cybersecurity directives

- Analyze systems based on risk, operational impact, security posture, and required level of ISSO/ISSE support.

- Maintain clear documentation supporting system grouping decisions, labor mapping, and support allocation.

- Coordinate with program leadership, the COR, call order PM, and internal reviewers to ensure the methodology is transparent, consistent, and defensible.

- Support alignment of labor categories and seniority levels to systems based on complexity and support requirements.

- Provide inputs for monthly reporting on labor allocation, chargeback, and cost recovery by system and FBI division.

- Assist with preparation of Monthly Statement Reports (MSRs), including cost details by labor category, system, and division.

- Track changes to systems, policies, technologies, and organizational structures that may affect categorization logic.

- Support updates to methodology and reporting workflows within required timeframes.

- Support ATO lifecycle activities, POA&M tracking, risk assessments, compliance documentation, and audit readiness efforts as needed.

- Support approved automation or semi-automated processes used for categorization, reporting, or labor/cost visibility in accordance with FBI requirements.

- Active Top Secret clearance required.

- Experience supporting system categorization, security control compliance, and risk management under federal cybersecurity frameworks.

- Working knowledge of:

- FIPS-199

- NIST SP 800-37

- NIST SP 800-53

- CNSS 1253

- Federal RMF processes

- Experience with GRC tools and maintaining system/security data.

- Experience supporting reporting, documentation, and audit readiness.

- Strong written and verbal communication skills.

- Ability to manage multiple systems and priorities in a structured, deadline-driven environment.