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Castelion · 1 day ago

Senior Simulation Software Engineer, GNC

Torrance, CA

Full-time

Onsite

Senior Level

$140K/yr - $200K/yr

Castelion is bringing a new approach to defense development and production, focusing on short, iterative design cycles and modern manufacturing strategies. They are seeking a Senior Simulation Software Engineer to design, develop, and maintain high-fidelity simulation software for missile guidance, navigation, and control, collaborating with various teams to ensure mission success.

AerospaceGovernmentManufacturingMilitaryNational Security

No H1B

U.S. Citizen Only

Hiring Manager

Nicholas Sparks

Responsibilities

Develop and maintain a 6-DoF missile simulation software platform

Build scalable infrastructure to execute, manage, and aggregate data from Monte Carlo campaigns, along with automated performance evaluation tools

Ensure appropriate configuration management and shared sources of truth between simulation and flight code

Optimize software for real-time or hardware-in-the-loop (HITL) execution where required

Develop robust testing, verification, and documentation practices to ensure reliability and correctness

Support flight software integration, pre-flight analysis, and post-flight reconstruction

Qualification

C++RustNumerical modelingGNC conceptsMonte Carlo simulationSoftware integrationVersion controlCI/CD pipelinesDatabasesClear communicationCreative problem solvingHigh initiative

Required

Bachelor's or Master's degree in computer engineering, computer science, aerospace engineering, or a related field

Strong proficiency in C++ or Rust for high-performance numerical modeling

Proficiency with databases and large data structures

Familiarity with version control, CI/CD pipelines, and modern software engineering practices

Experience with numerical integration, coordinate transformations, and simulation architecture

Experience with software integration, specifically linking disparate software modules (e.g., embedding Rust code in C++, Python bindings for C++ libraries)

Familiarity with GNC concepts in aerospace or missile systems

Ability to develop well-structured, scalable, and efficient code