Principal Mechanical Engineer – Defence Lead (FEA/Design)

Addition is seeking a Principal Mechanical Engineer to lead mechanical design across defence programmes in a hands‑on leadership role. You will drive FEA, thermal/CFD analyses and ensure designs meet defence standards and programme deadlines.

You’ll mentor engineers, produce documentation and BOMs, manage risks, and liaise with customers, suppliers and test houses while acting as Design Authority when required. Eligibility for UK security clearance is required.

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