MBSE Engineer

The Model-Based Systems Engineering (MBSE) Engineer is responsible for developing and maintaining digital models that represent the architecture, requirements, behavior, interfaces, and relationships of complex systems. This role applies Model-Based Systems Engineering methodologies and SysML to support system architecture, requirements analysis, system design, integration, and verification throughout the system lifecycle. The MBSE Engineer collaborates with systems, software, hardware, cybersecurity, integration, and test teams to develop authoritative system models that improve technical communication, requirements traceability, design analysis, and system‑level decision‑making.

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.

Mustpossessappropriate levelof certifications for this position as required by the contract.

Must be able to obtain and maintain the required customer clearance for access to systems, facilities, equipment and property.

• Essential duties and responsibilities include the following. Other duties may be assigned.
• Develop, maintain, and manage system models using MBSE methodologies and SysML.
• Create and maintain system architecture models representing system structure, behavior, functions, interfaces, requirements, and dependencies.
• Develop SysML diagrams and models, including block definition, internal block, activity, sequence, state machine, requirement, use case, and parametric models.
• Translate customer, mission, and operational needs into structured system requirements and model elements.
• Establish and maintain traceability between requirements, system functions, architecture elements, interfaces, and verification activities.
• Support functional decomposition and allocation of system functions to subsystems and components.
• Model and analyze interfaces, data flows, system interactions, and dependencies across subsystems and external systems.
• Develop system architectures and digital engineering artifacts to support concept development, design decisions, integration, and system lifecycle activities.
• Support system‑level trade studies and technical analyses using system models to evaluate design alternatives and system behavior.
• Collaborate with systems, software, hardware, cybersecurity, network, integration, and test engineers to ensure models accurately represent the system.
• Support system integration, verification, and validation by using system models to identify requirements, interfaces, and relationships.
• Develop and maintain MBSE modeling standards, modeling conventions, reusable model elements, and architecture frameworks.
• Maintain model integrity, consistency, configuration, and version control throughout the system lifecycle.
• Identify inconsistencies, gaps, and conflicts within system requirements, architectures, interfaces,…