Security Control Assessor III

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Security Control Assessor III

@ CGI

Position Description:

The Security Control Assessor III is the senior authority for complex security assessments across Treasury systems, providing independent evaluation of NIST SP 800 53 control implementations and authoritative risk determinations for Authorizing Officials. This role ensures rigorous assessment quality, FedRAMP/Cloud evaluation expertise, and high impact analysis for system authorization and enterprise compliance.

This position is located in our Fairfax, VA or Lafayette, LA or Knoxville, TN office; however, a hybrid working model is acceptable.

Your future duties and responsibilities:

• Lead comprehensive control testing, including cloud, hybrid, and classified system assessments 
• Develop SAPs, assess security controls, validate control inheritance, and produce SARs.
• Conduct HVA assessments and support DHS/OMB compliance 
• Evaluate AI models for algorithmic bias, adversarial vulnerabilities, and explainability 
• Validate remediation effectiveness and POA&M closure accuracy.
• Support ATO packages with documented risk findings and recommendations.
• Provide independent verification of security engineering outcomes

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Qualifications:

Required qualifications to be successful in this role:

• Bachelor's degree in Cybersecurity or related field.
• 9+ years of security control assessment experience.
• Experience with NIST SP 800 115, MITRE ATT&CK, CNSSI 1253.
• Desired qualifications/non essential skills required:
• CAP or CISSP certification.
• Experience supporting FedRAMP High, HVA, or national security systems.
• Familiarity with AI testing and red teaming.

Skills:

• Analytical Thinking
• Cyber
• Architecture AI & Data
• Risk management
• Security Infrastr Service Ctr

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How to Apply:

Apply online at: https://www.cgi.com/en/careers 

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