Senior Information Assurance Specialist
TACG is seeking an experienced Senior Information Assurance Specialist to serve as an Information System Security Officer (ISSO) supporting Department of Defense (DoD) information systems. This position is responsible for leading cybersecurity and information assurance initiatives, ensuring compliance with DoD cybersecurity policies, and supporting the full lifecycle of Assessment and Authorization (A&A) activities under the Risk Management Framework (RMF). The ideal candidate possesses extensive experience supporting classified and unclassified information systems, developing Authorization to Operate (ATO) packages, implementing cybersecurity controls, and collaborating with government stakeholders to maintain secure, compliant systems. Responsibilities (include but are not limited to): Lead the development, maintenance, and submission of Assessment & Authorization (A&A) packages in accordance with the DoD Risk Management Framework (RMF). Develop and maintain Authorization to Operate (ATO) documentation, including Security Plans, Cybersecurity Strategies, POA&Ms, Security Assessment Reports, and supporting artifacts. Utilize eMASS, ITIPS, and other DoD cybersecurity tools to manage authorization packages and system compliance. Conduct continuous monitoring activities throughout the System Development Life Cycle (SDLC) to identify, assess, and mitigate cybersecurity risks. Perform vulnerability assessments using tools such as Nessus, analyze DISA STIG compliance, review IAVAs, and validate security configurations. Evaluate system security posture through source code reviews, security testing, and compliance assessments. Develop, implement, and maintain Information Assurance (IA) policies, procedures, and security architectures aligned with DoD and federal cybersecurity requirements. Ensure compliance with NIST, FISMA, DoD cybersecurity directives, and applicable security standards. Serve as the primary cybersecurity liaison between Program Management Offices (PMOs), development teams, system owners, government ISSMs, and other stakeholders. Review vendor deliverables, assess technical security risks, recommend mitigation strategies, and validate cybersecurity documentation. Provide guidance and recommendations on cybersecurity best practices to support secure system development and operations. Communicate technical security concepts effectively to both technical and non-technical stakeholders. Essential Job Qualifications and Requirements: Security Clearance Active Secret Clearance required Education: Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or related field preferred. Required Experience: Experience working with NIST SP 800-53 Revision 5 (preferred) Hands-on experience supporting DoD Information Systems and cybersecurity processes Experience developing and supporting Authorization to Operate (ATO) packages Hands-on experience implementing and assessing Risk Management Framework (RMF) ...