Modeling/Sim Engr Principal

SAIC•Reston, VA

8h•Onsite

About The Position

SAIC is seeking a Model-Based Systems Engineer (MBSE) / MBSE Modeler to support a mission-critical national security program. The role designs, develops, and maintains SysML-based system models that capture requirements, behavior, structure, interfaces, and data flows for complex, software-intensive and mission systems. The modeler works with systems engineers, software engineers, architects, and government stakeholders to ensure the digital engineering environment accurately represents the operational and technical baseline and supports design, verification, and decision-making. This is an onsite position in Reston, Virginia. The position requires U.S. citizenship and an active TS/SCI clearance at time of hire. A bachelor's degree in a relevant technical discipline is required, though additional relevant experience may be considered in lieu of a degree in accordance with contract requirements. Candidates need at least five years of systems engineering experience on complex systems, including at least three years focused on MBSE modeling.

Requirements

U.S. citizenship.
Active TS/SCI clearance at time of hire.
Bachelor’s degree in Systems Engineering, Electrical Engineering, Computer Science, Computer Engineering, or a related technical discipline; additional relevant experience may be considered in lieu of a degree in accordance with contract requirements.
At least 5 years of systems engineering experience on complex systems, with at least 3 years focused on MBSE modeling.
Hands-on experience with MBSE tools such as Cameo/MagicDraw, IBM Rational Rhapsody, Enterprise Architect, or similar.
Demonstrated proficiency in SysML, including requirements, block definition, internal block, activity, sequence, state machine, and parametric diagrams.
Experience integrating models with requirements management tools such as DOORS, Jama, JIRA, or Cameo DataHub and maintaining requirements traceability.
Solid understanding of systems engineering lifecycle processes, including requirements analysis, architecture/design, integration, and verification/validation.
Ability to work onsite in a classified environment and coordinate closely with government and contractor teammates.
Strong communication skills, including the ability to present complex model and architecture concepts to technical and non-technical audiences.

Nice To Haves

Master’s degree in Systems Engineering, Computer Science, or a related technical field.
Experience supporting DoD or Intelligence Community programs.
Experience implementing Digital Engineering strategies, including integration of MBSE models with simulation, analysis, and configuration management tools.
Familiarity with UAF/DoDAF or other architecture frameworks and mapping them into SysML-based models.
Experience with version control and configuration management of models, such as Git, SVN, or Teamwork Cloud.
Working knowledge of software-intensive architectures, service-based or microservices architectures, and complex distributed systems.
Exposure to cloud and container technologies (AWS/Azure, Kubernetes, Docker) and how system architectures are represented in models.
Certifications such as INCOSE ASEP/CSEP/ESEP or vendor tool certifications such as Cameo/MagicDraw.

Responsibilities

Develop, maintain, and evolve models representing system architectures, requirements, behaviors, interfaces, and data structures.
Translate stakeholder needs and system requirements into model elements, including requirements, blocks, activities, state machines, sequence diagrams, and parametric diagrams.
Establish and enforce modeling conventions, patterns, and best practices to ensure MBSE products are consistent, accurate, and usable.
Support creation and maintenance of digital system architectures, including operational, logical, and physical views.
Integrate MBSE models with requirements management tools and other digital engineering artifacts to maintain traceability from requirements through design and test.
Collaborate with systems and software engineering teams to derive requirements, allocate functions, and validate that system and subsystem designs meet mission needs.
Generate model-based reports, views, and visualizations for technical reviews (SRR, PDR, CDR, TRR) and decision forums.
Support verification and validation by ensuring requirements are properly captured, traced, and testable within the model.
Participate in onsite meetings with government customers, presenting model content and explaining architectural decisions and trade-offs.
Contribute to process improvement and tooling enhancements for MBSE and digital engineering across the program.