Senior Information Systems Security Officer Active Top Secret/SCI with Polygraph

Senior Information Systems Security Officer (ISSO-S)
Full-time 12 Month contract
Fort Meade, Maryland

TECHNICAL SKILLS

Must Have

• Clearance Required: Active Top Secret/SCI with Polygraph
• Education: Bachelor s degree in Computer Science, Cybersecurity, or related field.

Nice To Have

• IAM Level I or higher (e.g., Security , CISSP, CISM)

JOB DESCRIPTION

Position Overview

Seeking a highly experienced Senior ISSO to lead cybersecurity efforts to support mission-critical systems for a Federal customer at Fort Meade, Maryland. The ISSO will ensure systems are secure, compliant, and resilient against evolving threats. This role involves managing the Risk Management Framework (RMF) lifecycle, supporting system accreditation, and collaborating with stakeholders to maintain a robust security posture.

Security Compliance & Governance

• Develop and enforce security policies, procedures, and standards.
• Ensure compliance with RMF, NIST SP 800-53, JSIG, DAAPM, and FISMA.
• Lead efforts to obtain and maintain Authority to Operate (ATO).

System Lifecycle Management

• Oversee security integration throughout the system development lifecycle.
• Maintain System Security Plans (SSPs), POA&Ms, and other A&A documentation.
• Register and manage systems in eMASS or equivalent platforms.

Risk Assessment & Mitigation

• Conduct vulnerability assessments using ACAS, STIGs, SCAP, and other tools.
• Track and resolve security findings and manage POA&M entries.
• Perform annual security reviews and contingency plan testing.

Incident Response & Monitoring

• Monitor systems for anomalous activity and respond to incidents.
• Coordinate with ISSMs, ISSEs, and AOs to report and remediate threats.
• Ensure business continuity and disaster recovery plans are in place and tested.

Collaboration & Leadership

• Advise system owners and program managers on security best practices.
• Support audits (FISMA, DHS, internal) and prepare risk acceptance memos.
• Mentor junior cybersecurity staff and promote security awareness.

Qualifications

Education: Bachelor s degree in Cybersecurity, Computer Science, or related field.

Experience: 5 years in cybersecurity, preferably in federal or defense environments.

Preferences:

IAM Level II or higher (e.g., CISSP, CISM, Security ).

Thanks,
Amit Sehdev
APN Software Services Inc.
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