C# Software Engineer – Defence Simulation (SC Clearance)

Company: Arm
Apply for the C# Software Engineer – Defence Simulation (SC Clearance)
Location: Stevenage
Job Description:

Arm is seeking a C# Software Engineer for a 12 month contract based in Stevenage or Bristol. The role involves developing defence simulation components using C# and C++, in an agile team, with CI/CD and testing practices. SC clearance is required for this position. The day rate is 65ph inside IR35.

You will work across Windows and Linux environments, and collaborate with simulation architects to deliver end-to-end representations of weapons systems in a synthetic environment.

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Posted: September 21st, 2026