Systems Modeling and Simulation Engineer (Engineer or Principal Level)

Northrop Grumman•San Diego, CA

47d•$91,800 - $171,000•Onsite

About The Position

Northrop Grumman Aeronautics Systems has an opening for a Systems Modeling and Simulation Engineer (Engineer or Principal Level) to join our team of qualified, diverse individuals within our Systems Engineering organization. This role is located in Rancho Bernardo, CA. In this role you will support Operations Analysis and should consider yourself a self-starter with a familiarity working in an Integrated Product Team (IPT) construct. This role may be filled at the Engineer or Principal Engineer level based on the qualifications. You will be required to work full-time, on-site at our facility. There is no remote / hybrid / telework available for this position. Travel up to 25% may be required.

Requirements

Must have a Bachelor of Science degree in a STEM field and 2 years of relevant military / professional experience, OR a Master of Science degree in a STEM field (for Engineer level)
Must have a Bachelor of Science degree in a STEM field and 5 years of relevant military / professional experience, OR a Master of Science degree in a STEM field 3 years of relevant military / professional experience, OR a PhD and 1 year of relevant military / professional experience (for Principal Engineer level)
Must have an active U.S. Government Top Secret Clearance or higher (with a background investigation completed within the last 6 years or currently enrolled into Continuous Evaluation)
Must have the ability to obtain and maintain Special Access Program (SAP) clearance, within a reasonable amount of time as determined by business needs.
Experience with Object‑Oriented languages (C#, C++, Java, etc.) and Windows‑based development.
Experience with agile software‑development methodologies.
Experience with the .NET runtime, CLR internals, garbage collection, and JIT compilation.
Experience using Visual Studio (debugging, refactoring, performance analysis).
Experience with version‑control tools (Bitbucket, GitHub, GitLab, Git, TFS) and CI/CD pipelines.
Experience with secure coding standards and relevant defense compliance (NIST, DoD).

Nice To Haves

Experience in at least one of the following domains: Mission‑planning applications, Systems performance monitoring and analysis, Modeling or simulation of radars, missiles, aircraft, or satellites.
Proven ability to develop and integrate prototype and pre‑production software for rapid hands‑on testing.
Experience building WPF applications using the MVVM pattern; familiarity with MVVM implementation in Blazor.
Familiarity of how to design re‑usable UI libraries that span WPF and Blazor.
Familiarity with CRUD, DTO, and gRPC service patterns.
Experience creating physics‑based models and simulations using OOP.
Hands‑on work with Service‑Oriented Architectures and systems‑integration projects.
Demonstrated success in a rapid‑prototyping team environment.
Experience with system‑of‑systems modeling tools (AFSIM, Suppressor, Brawler).
Advanced proficiency with CommunityToolkit.Mvvm / MVVMToolkit.
Strong communication, interpersonal, and leadership skills, including project/analysis lead experience.
Current active DoD Top Secret clearance with SAP/SCI.

Responsibilities

Utilize full life cycle design, implementation, and unit testing of software using C# / .NET (including CLR, garbage collection, JIT compilation).
Leverage core computer science fundamentals—algorithms, data structures, and complexity analysis—to solve logical and mathematical problems.
Develop, profile, and tune high performance, optimized code; conduct runtime analysis and memory usage profiling.
Build and maintain desktop applications with WPF and the MVVM pattern; extend MVVM concepts to modern UI frameworks such as Blazor while preserving a consistent architecture across platforms.
Design and publish re usable UI component libraries that work in both WPF and Blazor environments.
Implement common application patterns (CRUD, DTO design, gRPC services) to enable efficient data exchange.
Use Visual Studio at an expert level (debugging, refactoring, performance profiling, navigating large solutions).
Follow secure coding practices and defense related compliance standards (e.g., NIST, DoD).
Create and maintain technical documentation; translate design decisions for both technical and non technical stakeholders.
Reverse engineer existing code bases to understand architecture and locate critical logic.
Operate within CI/CD pipelines (Git/TFS, Azure DevOps, etc.) and collaborate in version controlled, team based environments.
Work independently, meet strict project timelines, and synthesize input from diverse stakeholders to communicate results to leadership.