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Date Added: Fri 27/02/2026

Mechanical Design Engineer

Stevenage, UK
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Company: CERTAIN ADVANTAGE

Job Type: Permanent, FullTime

Salary: £50.00 per hour, Inc benefits

World Class Defence Organisation is currently looking to recruit a Mechanical Design Engineer subcontractor on an initial 6 month contract.Job Title:  Mechanical Design EngineerRate: £50.00 per hourLocation: Stevenage or Bristol (depending on your preference) Hybrid / Remote working: 4 days a week likely onsite (likely could be lower on a week by week basis; depending on work). 1 day remote. (flexible on start and finish time). A compressed 4 day week (Monday to Thursday) a possibility.Contract: 37 Hours per weekOvertime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’Duration: 6 Months (initially and then ongoing and long-term thereafter)IR35 status: Inside IR35 (Umbrella)Mechanical Design Engineer Job Description:An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a Mechanical Design Engineer. You will work closely with other functional teams, to develop products to meet our customer’s needs. Within this role you will have the opportunity to undertake cutting-edge research of novel mechanical technologies to meet the challenges of tomorrow.Responsibilities:
  • Carry out Mechanical Design and proving activities as part of a wider team for prime and variant products, of both piece parts and assemblies.
  • Support/liaise with manufacturing, resolving manufacturing problems & defects.
  • Support to functional & environmental testing and trials.
  • Liaise with suppliers/purchasing to resolve any technical queries that may arise.
  • Planning and reporting on own day-to-day activities to meet project milestones.
  • Gain clarification of and help to generate requirements, including challenging of extraneous requirements to reduce lead time, UPC and design complexity
Skillset/experience required:
  • Experience using Creo 3D design tool
Knowledge of several of the following……………..
  • Manufacturing processes
  • Tolerance studies
  • Environmental test
  • Mass property calculations
  • Material selection
  • FMEA
  • Design for Manufacture/Assembly
  • Environmental Gasket Sealing
  • Tooling/fixtures design
  • Structural design
  • Defence Standards
  • Review processes
  • Product Lifecycles
  • Industrial validation
  • An ability to work as part of a multifunctional engineering team and be able to partake in or host design reviews.
  • An appreciation of other engineering areas/domains. 
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