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

Agile Defense, Inc.; Quantico (VA); On-site; USD 130,000 - 180,000; Full time

Benefits offered by this job

Health Insurance

Life Insurance

Paid Time Off

Holiday Pay

Short-term Disability

Long-term Disability

Retirement and Learning andDevelopment

Job summary

Agile Defense, Inc. is seeking an experienced Information System Security Officer (ISSO) to support FBI programs, focusing on categorization methodology, RMF alignment, and labor/cost reporting.

The role requires TS clearance with SCI eligibility to start and extensive federal cybersecurity experience. The successful candidate will oversee security controls, risk management, and documentation across FBI IT systems, coordinating with COR, PM, and reviewers to ensure compliance and audit readiness

Qualifications

• Active Top Secret clearance required.
• Experience supporting system categorization, security control compliance, and risk management under federal cybersecurity frameworks.
• Familiarity with FIPS-199, NIST RMF, and CNSS policies is preferred.
• Strong written and verbal communication skills.

Responsibilities

• Support development and maintenance of a documented methodology to categorize FBI IT systems based on security, operational, and mission-related factors.
• Apply the methodology across assigned systems and align with applicable standards.
• Coordinate with program leadership and reviewers to ensure transparency and defensibility.
• Provide inputs for monthly labor allocation, chargeback, and cost recovery reporting.

Skills

Top Secret clearance

Cybersecurity compliance

RMF framework

GRC tools

Documentation

Audit readiness

Communication skills

Education

Bachelor's degree in Cybersecurity or related field

Tools

Azure

AWS

Job description

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 #: 1928

Job Title: Information System Security Officer - Senior

Clearance Level: TS with SCI eligibility required to start job

Required Certification(s): One of the following: CISM, CISSO, CISSP, CISSP-ISSMP, FITSP-M, GCIA, GCIH, GCSA, GICSP, or GSLC

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 #: 1928

Job Title: Information System Security Officer - Senior

Location: Quantico, VA

Clearance Level: TS with SCI eligibility required to start job

Required Certification(s): One of the following: CISM, CISSO, CISSP, CISSP-ISSMP, FITSP-M, GCIA, GCIH, GCSA, GICSP, or GSLC

Job Description

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.

Education and Background

• 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.
• One of the following certifications: CISM, CISSO, CISSP, CISSP-ISSMP, FITSP-M, GCIA, GCIH, GCSA, GICSP, or GSLC

Required Skills

• 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.

Preferred Skills

• 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.

In addition, Agile Defense invests in its employees beyond just compensation.

• Health Insurance
• Life Insurance
• Paid Time Off
• Holiday Pay
• short-term and long-term Disability
• Retirement and Learning and Development opportunities
• other optional benefit elections

Our Core Values

Employees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together.

What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are.

• Happy - Be Infectious.
• Helpful - Be Supportive.
• Honest - Be Trustworthy.
• Humble - Be Grounded.
• Hungry - Be Eager.
• Hustle - Be Driven.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.