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Principal Mechanical Design Engineer

Job in Stevenage, Hertfordshire, SG1, England, UK
Listing for: Energy Jobline ZR
Full Time position
Listed on 2026-06-07
Job specializations:
  • Engineering
    Manufacturing Engineer, Mechanical Engineer
Salary/Wage Range or Industry Benchmark: 40 - 50 GBP Hourly GBP 40.00 50.00 HOUR
Job Description & How to Apply Below

Job Summary

An opportunity has arisen with our client for a Principal Mechanical Design Engineer to join them on a 6‑month contract. The successful candidate will develop products to meet customer needs and progress developmental designs into production environments, working closely with suppliers on technical queries.

Key Details
  • Role:
    Principal Mechanical Design Engineer
  • Pay: £40-£50 per hour via umbrella
  • Location:

    Stevenage or Bristol
  • Contract:

    6 months
  • Hours:

    Monday – Friday, 37 hours per week
  • Security Clearance:
    Security Cleared; can start on BPSS/UK Eyes only
Responsibilities
  • Carry out mechanical design and proving activities as part of a wider team for prime and variant products, including both individual parts and assemblies.
  • Support and liaise with manufacturing to resolve manufacturing problems and defects.
  • Support functional and environmental testing and trials.
  • Liaise with suppliers/purchasing to resolve any technical queries that may arise.
  • Plan and report on own day‑to‑day activities to meet project milestones.
  • Clarify and help generate requirements, challenging extraneous requirements to reduce lead time, UPC and design complexity.
Qualifications & Experience
  • Experience using Creo 3D design tool.
  • Appreciation of other engineering areas/domains.
  • 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
    • Structural design
    • Defence standards
    • Review processes
    • Product life cycles
    • Industrial validation
  • Ability to work as part of a multifunctional engineering team and to partake in or host design reviews.

If you meet the requirements, please send your updated CV to Natalie Dalkin at Line Up Aviation.

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