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# Systems Engineer III - Model Based Systems Engineering (MBSE)

- **Company:** Sierra Nevada Corporation.
- **Location:** Plano, TX, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, MATLAB, Requirements Management, Verification and Validation (Software), Systems Modeling Language, Systems Integration, SC Clearance, Enovia
- **Published:** August 2, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9019283/systems-engineer-iii-model-based-systems-engineering-mbse

## About the Role

* Bachelor's of Science degree in System Engineering or related discipline and typically 6 or more years of relevant experience
 * Higher education may substitute for relevant experience
 * Practical knowledge of engineering principles and practices
 * Experience working in multi-disciplinary design and development teams
 * Knowledge of requirements management, functional requirements parsing, derivation, and allocation; systems design, systems integration, technical risk identification and management strategies, and Verification and Validation (V&V) principles
 * Current active Secret clearance with the ability to obtain a Top Secret clearance required., * Experience with requirements management and system modelling tools, such as ENOVIA Requirements Management, DOORs, Cameo, Dymola, and MATLAB.
 * Practical knowledge of industry standard Systens Engineering design principles, to include, but not limited to requirements management, Traditional Systems Engineering, and Model Based System Engineering (MBSE)
 * Experience and certification in INCOSE standards (ASEP/CSEP)
 * Background in the Aerospace and Defense Industry
 * Ability to administer baseline definition and maturation in a complex development setting, including the use of high impact trade studies and other measures
 * Exposure to establishing and tracking key Technical Performance Measurements (TPM)

This posting will be open for application for a minimum of 5 days and may be extended based on business needs., This position requires the ability to obtain and maintain a Top Secret U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment. Non-U.S. Citizens may not be eligible to obtain a security clearance. The Department of Defense Consolidated Adjudications Facility (DoD CAF), a federal government agency, handles the adjudicative aspects of the security clearance eligibility process for industry applicants. Adjudicative factors which affect the outcome of the eligibility determination include, but are not limited to, allegiance to the U.S., foreign influence, foreign preference, criminal conduct, security violations and illegal drug use.

## Description

* Define and manage system architectures, interfaces and requirements using MBSE tools
 * Implement MBSE methodologies for the program
 * Develop and maintain the system models using SysML to ensure design consistency, traceability, and integration across multiple programs
 * Define and document system architecture requirements and ensure traceability to system models
 * Collaborate with systems engineers, software developers, cybersecurity engineers and system safety engineers to ensure that architecture design is reusable, scalable, and certifiable
 * Assist with development of internal reference architecture.
 * Work closely with other programs to develop services and components, to include building system models that will represent system performance attributes so that key performance requirements can be tracked and analyzed through the program Life-cycle.


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