Systems Modeling and Simulation Engineer – Principal/Senior Principal

• 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 reusable 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.
• Create and maintain technical documentation; translate design decisions for both technical and non-technical stakeholders.

Requirements

• 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
• Must have an active U.S. Government Secret Clearance or higher
• Strong grasp of agile software development methodologies
• Proficiency with Object Oriented languages (C#, C++, Java, etc.) and Windows based development
• 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
• Expert use of Visual Studio (debugging, refactoring, performance analysis)
• Significant experience with version control tools (Bitbucket, GitHub, GitLab, Git, TFS) and CI/CD pipelines.
• A good knowledge of secure coding standards and relevant defense compliance (NIST, DoD).

ATS Optimization Keywords

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Hard Skills

• C#
• .NET
• algorithms
• data structures
• complexity analysis
• WPF
• MVVM
• gRPC
• CRUD
• DTO design

Soft Skills

• communication
• problem solving
• technical documentation
• stakeholder engagement

Certifications & Qualifications

• Bachelor of Science
• Master of Science
• PhD
• U.S. Government Secret Clearance