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

Agile Defense•Huntsville, AL

3d•$130,000 - $145,000

About The Position

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.

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.
Bachelor’s degree in Cybersecurity, Information Assurance, Information Systems, Computer Science, Engineering, or related field; equivalent experience may be considered.
8 + years of experience in cybersecurity compliance, information assurance, ISSO support, or system security governance in a federal environment.

Nice To Haves

Experience supporting FBI, DOJ, IC, or other federal law enforcement or national security customers.
Experience with classified systems and National Security Systems.
Familiarity with Azure and AWS environments.
Experience supporting labor/resource planning based on system complexity or compliance workload.
Relevant certification(s), such as CISSP, CISM, CAP, Security+, or GSLC.

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.