Senior Mechanical Design Engineer (Tooling) - Siemens NX Location: Derby (On-site) Sector: Highly Regulated Engineering / Defence / Complex Tooling Clearance: British Citizens only - eligibility for UK Security Clearance (SC) required The Opportunity Are you and experienced mechanical design engineer, looking for your next long-term opportunity? We're delighted to be supporting a major engineering consultancy, delivering complex tooling and mechanical design solutions across highly regulated sectors, as part of a wider framework agreement. Due to significant investment and long-term programme growth, we're looking for experienced Senior Mechanical Design Engineers, with strong Siemens NX skills and a background in tooling, fixtures, jigs, lifting equipment or precision mechanical systems. Here, you will be joining a powerhouse of the engineering world, working with a talented, multi-disciplinary engineering team, and the chance to collaborate on cutting-edge, meaningful UK programmes with long-term career potential. Key Responsibilities 3D modelling and 2D detailing in Siemens NX Managing design data via Teamcenter (PLM) Full lifecycle tooling design: requirements ? concept ? DfM ? release Producing assemblies, sub-assemblies, BOMs and detailed drawings Applying GD&T to ASME Y14.5 / BS standards Supporting gated design reviews and client presentations Ensuring compliance with safety legislation and UKCA requirements What You'll Bring Essential: Strong Siemens NX (3D 2D) Proven tooling / jigs / fixtures / lifting equipment design experience Teamcenter or similar PLM experience Solid DfM understanding Confident with GD&T Desirable: Experience in nuclear, aerospace, defence, heavy engineering, oil & gas FEA exposure (Abaqus, ANSYS, MathCAD or hand calcs) Manufacturing or toolmaker background Why Join? Long-term, high-value engineering programmes Growing team with strong investment and future opportunities Complex, interesting design challenges Work that contributes to nationally significant projects Security Requirements Due to project restrictions, applicants must be British Citizens (sole nationality) and eligible for UK Security Clearance (SC). Apply If you're an experienced Mechanical Design Engineer with strong NX capability and a passion for complex tooling design, we'd like to hear from you. Apply for a confidential discussion.