Full-time

Principal Mechanical Engineer

Posted by Outsource UK • cowes, england, United-Kingdom

📍 cowes, england 🕒 June 18, 2026

About the Role

Principal Thermal Mechanical Engineer (Radar / Defence)

Location: Cowes (Isle of Wight)

Duration: 6 Months

IR35 Status: Inside IR35

Working Pattern: 3 days onsite (full-time onsite for initial weeks)

Security Clearance: BPSS required (SC in progress)

Compliance: Subject to ITAR

Overview

We are seeking a Principal Thermal Mechanical Engineer with expertise in thermal management, heat transfer, and complex mechanical systems to support the development of advanced radar technologies within the defence sector.

This is a senior-level contract role suited to a mechanical engineering subject matter expert (SME) with strong experience across the full engineering lifecycle , including design, analysis, build, integration and test of high-performance systems.

Key Responsibilities

  • Lead th...

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