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) security controls * Experience supporting SIPRNet information system authorization packages, including artifact development, control implementation, and security test documentation * Experience using eMASS to manage RMF and ATO activities * Experience supporting cybersecurity compliance throughout the System Development Life Cycle (SDLC) * Required Skill and Competencies * Strong understanding of DoD Information Assurance principles and cybersecurity compliance requirements * Experience with vulnerability management tools, including Nessus, DISA STIGs, and IAVA compliance * Excellent analytical, organizational, and problem-solving skills * Strong written and verbal communication skills with the ability to explain complex technical concepts to diverse audiences * Advanced proficiency with Microsoft Office Suite, including: * Microsoft Excel (PivotTables, VLOOKUP/XLOOKUP, formulas, and data analysis) * Microsoft Word (professional documentation and technical reports) * Microsoft PowerPoint (executive-level presentations) * Work Location Requirements * On-site in Kettering, OH * Must be willing to travel to the Pentagon or Fairfax, VA as required Position Pay Range $125,000—$140,000 USD About Copper River & The Native Village of Eyak: Owned by the Native Village of Eyak (NVE), a federally recognized Alaska Native Tribe, the Copper River Family of Companies are a collection of entities that deliver a complementary set of solutions and services to support the diverse missions and requirements of our clients. Proud participants of the Small Business Administration’s (SBA) 8(a) Business Development Program since 2006, our companies consist of both current and graduation SBA 8(a) entities. It is our collective purpose to support the Tribe and diversify the NVE’s ability to facilitate economic advancement. The income generated from our companies helps the Native Village of Eyak fund health and social services, economic development, natural resource/environmental education, jobs, job training, and other benefits to the NVE in a manner that is consistent with Alaskan Native cultural values and traditions. Copper River’s Culture The Copper River Family of Companies has a positive, supportive, and thriving culture. At the foundation of our culture is a focus on collaboration. No matter your role or which operating company you work for, we are ONE TEAM working toward the same goals for our customers and for our collective owner- The Native Village of Eyak. How we treat each other is just as important as the work we deliver. Benefits * Comprehensive medical, dental, and vision coverage * Flexible Spending Account - healthcare and dependent care * Health Savings Account - high deductible medical plan * Retirement 401(k) with employer match * Open leave policy and paid holidays * Additional benefits including tuition reimbursement, transportation expense account, employee assistance program, and more!  Note: Benefits are offered based on employment classification and applicable contract requirements. Eligibility may vary by position. Disclaimer: The Copper River Family of Companies provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.