Principal Mechanical Design Engineer

Contract Type:

Contract

Location:

Stevenage

Industry:

Engineering

Contact Name:

Fraser Richings

Contact Email:

Fraser.Richings@meritustalent.com

Contact Phone:

02922671372

Date Published:

09-Jul-2025

MERITUS Talent are working with one of Europe's leading defence systems manufacturers for the recruitment of a Principal Mechanical Design Engineer to join their Stevenage office on a 12 Month contract basis. The rate on offer is £50 per hour INSIDE IR35, and requires the candidate to be onsite full-time. Before starting the role, the candidate must undergo and attain SC security clearance.

Job Title: Principal Mechanical Design Engineer
Location: Stevenage (on-site)
Rate: £50 per hour (via umbrella)
Contract: 12 Months
Security Clearance: Must be eligible to obtain UK SC clearance


A leading defence engineering organisation is seeking a Principal Mechanical Design Engineer to join their team in Stevenage. In this role, you'll be working on the mechanical design of complex systems, contributing to high-profile defence projects within a multi-disciplinary engineering environment.


What you'll be doing:

  • Creating and developing 3D designs of components and assemblies using Creo

  • Supporting the transition from design to manufacturing, resolving technical queries as needed

  • Assisting in functional and environmental testing to ensure designs meet performance requirements

  • Liaising with suppliers and internal purchasing teams to address design or build challenges

  • Planning and managing your own tasks in line with project deadlines and reporting requirements

  • Reviewing and refining technical requirements to reduce cost, complexity and lead time


Key skills and experience:

  • Proficient in Creo 3D CAD software

  • Strong understanding of mechanical engineering principles and manufacturing processes

  • Experience in one or more of the following:

    • Tolerance analysis

    • Structural design and environmental testing

    • Material selection

    • FMEA

    • Mass property calculations

    • Gasket sealing and design for manufacture/assembly

    • Working with Defence Standards

    • Product lifecycle management

  • Comfortable working in a cross-functional team and participating in design reviews

  • A broad appreciation of other engineering disciplines (e.g. systems, electronics) is a plus


This is a great opportunity to be part of a highly skilled engineering team, working on critical systems in a challenging but rewarding environment.

To apply, please send your CV and availability.

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