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Northrop Grumman

Principal Systems Modeling and Simulation Engineer

Northrop Grumman

. Utilize full life cycle design, implementation, and unit testing of software using C# / .NET .

Posted 4/2/2026full-timeSan Diego • California • 🇺🇸 United StatesSenior💰 $114,000 - $171,000 per yearWebsite

Tech Stack

Tools & technologies
GRPCJava.NETTFSWPF

About the role

Key responsibilities & impact
  • Utilize full life cycle design, implementation, and unit testing of software using C# / .NET
  • 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
  • Build and maintain desktop applications with WPF and the MVVM pattern; extend MVVM concepts to modern UI frameworks such as Blazor
  • Design and publish reusable UI component libraries that work in both WPF and Blazor environments
  • 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

Requirements

What you’ll need
  • Must have a Bachelors degree in a STEM field and at least 5 years of relevant military / professional experience, OR a Master's Degree in a STEM field and at least 3 years of relevant military / professional experience, OR a PhD and at least 1 years of relevant military / professional experience
  • Must have an active DoD Secret or higher clearance with a background investigation completed within the last 6 years or currently enrolled into Continuous Evaluation
  • Strong grasp of agile software development methodologies
  • Proficiency with Object Oriented languages (C#, C++, Java, etc.)
  • Demonstrated expertise in the .NET runtime, CLR internals, garbage collection, and JIT compilation
  • Proven ability to write highly optimized, performant code and conduct profiling/tuning
  • Experience building WPF applications using the MVVM pattern; familiarity with MVVM implementation in Blazor
  • Familiarity with CRUD, DTO, and gRPC service patterns
  • Significant experience with version control tools (Bitbucket, GitHub, GitLab, Git, TFS) and CI/CD pipelines
  • Good knowledge of secure coding standards and relevant defense compliance (NIST, DoD)
  • Strong problem-solving skills; capacity to work independently while adhering to strict timelines.

Benefits

Comp & perks
  • Health insurance coverage
  • Life and disability insurance
  • Savings plan
  • Company paid holidays
  • Paid time off (PTO) for vacation and/or personal business

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
C#.NETWPFMVVMBlazoralgorithmsdata structuresperformance tuningObject Oriented programminggRPC
Soft Skills
problem-solvingindependencecommunication
Certifications
DoD Secret clearance