The Information System Security Officer IV (ISSO) provides senior-level cybersecurity support for complex information systems and programs. Demonstrates advanced knowledge of cybersecurity risk management, control implementation, and compliance frameworks. Helps lead security compliance efforts, advises stakeholders on risk and control implementation, and supports authorization and continuous monitoring activities across multiple systems or high-impact environments. Chickasaw Nation Industries, Inc. serves as a holding company with multiple subsidiaries engaged in several lines of business (Business Services, Health, Infrastructure and Engineering, Mission Optimization, Technology and Transportation) for the federal government and commercial enterprises. A portion of our profits is used to support Chickasaw citizens. We are proud to support the economic development and long-term viability of the Chickasaw Nation and its people. CNI offers premium benefits eligible on the first day of hire to full time employees; (Medical - Dental – Vision), Company Life Insurance, Short-Term and Long-Term Disability Insurance, 401(K) Immediate Vesting, Professional Development Assistance, Legal Aid Assistance Program, Family Planning / Fertility Assistance, Personal Time Off, and Observance of Federal Holidays. As a federal contractor, CNI is a drug-free workplace and adheres to the Federal Controlled Substance Act. ESSENTIAL REQUIREMENTS The ability to obtain, maintain and access classified information at the Top Secret/SCI level, which requires U.S. Citizenship Required Certification at the DoD 8570 IAT - Level II Advanced knowledge of cybersecurity risk management, control implementation, and compliance frameworks. Significant experience supporting authorization, assessment, and continuous monitoring activities. Ability to evaluate complex technical environments and communicate risk clearly. KEY DUTIES AND RESPONSIBILITIES Essential Duties and responsibilities include the following. Other duties may be assigned. RMF Execution: Lead all aspects of the RMF process, from system categorization and security control selection to implementation and assessment. Security Documentation: Develop, maintain, and update all required RMF documentation, including the System Security Plan (SSP), Security Assessment Report (SAR), and Plan of Action & Milestones (POA&M). eMASS Management: Manage the system's security posture within the Enterprise Mission Assurance Support System (eMASS), ensuring all data is accurate and up to date. Continuous Monitoring: Implement and manage a robust continuous monitoring strategy to actively assess security control effectiveness, track vulnerabilities, and manage configuration changes. Stakeholder Coordination: Serve as the primary security advisor to the system owner and liaise with the Authorizing Official (AO) and other key stakeholders EDUCATION AND EXPERIENCE Bachelor’s degree and a minimum of seven or more  (5+)  years related experience, or equivalent combination of education/experience. PHYSICAL DEMANDS Work is primarily performed in an office environment. Regularly required to sit. Regularly required use hands to finger, handle, or feel, reach with hands and arms to handle objects and operate tools, computer, and/or controls. Required to speak and hear. Occasionally required to stand, walk and stoop, kneel, crouch, or crawl. Must frequently lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds. Specific vision abilities required by this job include close vision, distance vision, depth perception, and ability to adjust focus.  Exposed to general office noise with computers printers and light traffic.  The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.  Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of this job. EOE including Disability/Vet The estimated pay range for this role is $115,000 to $145,000, with the final offer contingent on location, skillset, and experience. CNI offers a comprehensive benefits package that includes: Medical Dental Vision 401(k) Family Planning/Fertility Assistance STD/LTD/Basic Life/AD&D Legal-Aid Program Employee Assistance Program (EAP) Paid Time Off (PTO) – (11) Federal Holidays Training and Development Opportunities Your application submission will be considered for all potential employment opportunities with Chickasaw Nation Industries (CNI). Chickasaw Nation Industries, Inc. (CNI) is a federally chartered corporation wholly owned by the Chickasaw Nation. Headquartered in Norman, Oklahoma, CNI serves as a holding company with multiple subsidiaries that operate as Limited Liability Companies (LLCs) engaged in several lines of business including Civilian, Defense, Filtration, Network Services, and Research, Development, Test and Evaluation. CNI supports a diverse culture that offers innovative approaches and customer-centered services. When you do business with us, you gain efficient and cost-effective solutions that help safeguard the environment, protect and secure key assets, and connect resources to needs. We are proud to support the economic development of the Chickasaw Nation and to contribute to the tribal mission of enhancing the overall quality of life of the Chickasaw people. A portion of our profits is used to support Chickasaw citizens through a multitude of programs and services such as education, health care, nutrition services, housing programs, legal services, elder and child care and community support programs. Successful economic development is an integral part of the Chickasaw Nation’s operations.

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