Information System Security Officer (ISSO) - Senior - TS with SCI eligibility 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. 

- 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.