SR Computer Scientist - Information System Security Engineer (ISSE)

The Senior Computer Scientist, serving as an Information System Security Engineer (ISSE), will act as the primary cybersecurity authority for tools and CI/HUMINT data-management systems. The position is responsible for ensuring security is built into system design and development, then assessed, accredited, and sustained across the system lifecycle, including coordination of ATO and cross-domain security requirements.

Responsibilities

• Ensure UMM tools and data-management systems meet DIA security requirements and applicable federal security standards.
• Embed and integrate security controls across software design, development, deployment, and sustainment activities.
• Perform security assessments, risk analyses, vulnerability assessments, and continuous compliance monitoring.
• Support Authority to Operate (ATO) activities, including required security documentation and certification/accreditation coordination.
• Implement security controls in alignment with NIST and DoD standards and applicable DIA frameworks.
• Define and coordinate security requirements for cross-domain data transfers with Service and Combatant Command tool administrators.
• Support secure data-sharing and system access requirements for operational use.
• Coordinate with the DIA CIO on security certification, accreditation, and security-update activities.
• Advise the Technology Project Manager on security requirements and support Software Engineers in applying secure coding practices.
• Ensure foreign-disclosure requirements and controls are incorporated into system designs and data-sharing processes.
• Maintain security controls and standards during system sustainment and support revisions to data-transfer security requirements.

Required Qualifications

• Extensive experience with Risk Management Framework (RMF) and ATO processes.
• Demonstrated expertise implementing security controls, conducting risk assessments, and performing vulnerability assessments.
• Knowledge of NIST, DoD, DIA, and Intelligence Community cybersecurity frameworks and policies.
• Experience securing intelligence systems, software applications, and data-management environments.
• Knowledge of cross-domain security architectures, system access controls, and secure data-sharing practices.
• Ability to work across technical and operational teams, translating security requirements into implementable controls while balancing security with mission needs.
• Strong analytical skills, attention to detail, and current awareness of evolving cyber threats and security technologies.

Technologies & Knowledge Areas

• Risk Management Framework (RMF)
• ATO
• NIST
• DoD
• DIA
• Intelligence Community cybersecurity frameworks and policies
• CI/HUMINT
• CISSP
• CAP
• CISM

Preferred Qualifications

• Relevant cybersecurity certification, such as CISSP, CAP, or CISM.
• Experience supporting CI/HUMINT systems, secure software development, and cross-domain data-transfer solutions.
• Experience working with DIA security certification and accreditation processes.

Location, Schedule, and Position Details

• Location: Reston, VA (onsite).
• Position level: Senior, one base full-time equivalent.
• Workweek: 40-hour workweek; schedules may vary based on mission requirements.

Additional Information

• Travel: May include CONUS/OCONUS travel in support of training and partner engagements.
• Work environment: On-site in a secure facility; instruction and coordination conducted in classified environments.

Security Requirement

All applicants must be U.S. citizens and eligible to obtain and maintain a U.S. government security clearance.

Benefits

• Medical, dental, and vision coverage
• Paid time off (PTO) and holidays
• 401(k) retirement plan options
• Professional development and training opportunities