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Principal Mechanical Engineer

Job in Crawley, West Sussex, RH11, England, UK
Listing for: Thales
Full Time position
Listed on 2026-01-27
Job specializations:
  • Engineering
    Mechanical Engineer, Engineering Design & Technologists, Manufacturing Engineer, Product Engineer
Job Description & How to Apply Below

The Role

We are seeking an experienced a Senior Mechanical Design Engineer who has a proven ability to apply engineering first principles and knowledge to new & existing products within the IAS portfolio. Working as part of a large Mechanical Design team, the Senior Mechanical Design Engineer collaborates with local teams and multiple stakeholders to produce detailed Mechanical designs and support to a range of Weapon System, Missile and Platform products to satisfy customer requirements.

As we enter a period of significant growth, we are seeking experienced engineers that have a proven track record and ability to implement excellent mechanical design process principles to projects to ensure project delivery and robust design output.

General Responsibilities
  • Leverage engineering fundamentals to make sound decisions on complex technical issues
  • Proactively challenge and drive team, self and organisation to deliver improved quality and performance related to engineering design
  • Detailed Mechanical Design (supported by a range of CAE applications)
  • Maintain product documentation in line with department processes
  • Collaborate with multiple stakeholders across business unit, and beyond, to ensure robust product designs
  • Perform engineering change related tasks, ensuring BOM & process integrity
  • Produce engineering technical drawings in line with BS 8888 guidelines
  • Lead & Participate in Design Reviews
  • Undertake & Lead Mechanical Work Packages
Essential Criteria
  • Degree (or similar) in engineering related discipline, preferably Mechanical Engineering
  • 6+ Years experience in a Mechanical Design Role
  • Experience & proficient in CAD software and its use in Mechanical design (Particularly Creo and/or Catia)
  • Experience in producing Engineering Drawings & application of GD&T and knowledge of BS8888
  • Experience in PLM software such as Windchill
  • Experience in Design for Manufacture principles and application of principles during design process & review
  • Experience in BOM creation and Engineering Change processes (with consideration given to implications of changes managing through the process)
  • Experience & knowledge of international standards as part of product design process
  • Proficient in use of Microsoft office applications
  • Experience in working as part of a project and/or product team to deliver against milestones
  • Excellent Communication & collaboration skills
  • Knowledge of Environmental testing methods and how they integrate into robust product design
  • Experience in solving complex problems and decision-making skills
Desirable Criteria
  • Experience in Six Sigma / Continuous Improvement projects
  • Experience in APQP/DFMEA techniques and their integration in the design process
  • Experience in leading a DFMAT assessments / evaluations & implementation of principles in design
  • Experience in leading and delivering projects
  • Experience in leading teams and people
  • Experience in using CAM software to influence design
  • Experience on working on several projects simultaneously
  • Experience in using simulation software to help assist design (Ansys, Creo Simulate, Solid Works Simulate) etc.
  • Experience with other CAE tools
  • Experience dealing with suppliers & customers, both internal & external
  • Knowledge of Defence Standards
CANDIDATES THAT WOULD IMPRESS USPROFILE:
  • You graduated with a Master of Engineering, Computer Science or any other relevant field in University
  • You have significant experience in hardware development and more specifically in mechanical engineering
  • You want to focus in the mechanical field, implement it in a solution, and capture associated trends and concerns
  • You are a true team-player and love to work within a multidisciplinary environment
  • You are clear about the organisation goals and the strategies you are working for, demonstrating an actual customer-oriented mind set
  • You are very rigorous and analytical, logically examining the steps taken and the outcome to make corrections and produce better results
Life as a Thales Mechanical Engineering Role

As a Mechanical Engineering Role within Thales, you will:

  • Perform a subset of all the hardware engineering activities applicable to Mechanical Engineering
  • Analyse the mechanical needs whatever the used means (e.g. advanced studies, simulations, mock-ups, models, prototypes)
  • Describe the mechanical functions, requirements and development plan
  • Elaborate the data package to be transferred to production
  • Work collaboratively with production and procurement to produce cost effective, easy to manufacture mechanical design solutions
  • Monitor, plan and organise mechanical activities to measure and report on the technical progress
  • Propose and justify technical, technological and methodological choices in accordance with the approved mechanical architecture and design
  • Monitor compliance of designs against target costs and lead time
Your Career At Thales

Future opportunities will allow you to discover other domains or sites. You will be able to evolve and grow your competencies in different areas:

  • Room and attention to personal development
  • Build your…
Position Requirements
5+ Years work experience
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