Senior/Principal Mechanical Design Engineer
Senior/Principal Mechanical Design Engineer

Senior/Principal Mechanical Design Engineer

Northolt Full-Time 48000 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design innovative mechanical solutions for cutting-edge naval technology.
  • Company: Leading UK defence tech firm focused on advanced engineering solutions.
  • Benefits: Enjoy a 9-day fortnight, flexible working, and a supportive culture.
  • Why this job: Make a real impact on global naval missions with your engineering skills.
  • Qualifications: Degree in Mechanical Engineering and experience with 3D CAD tools.
  • Other info: Join a diverse team with exciting growth opportunities in a high-tech sector.

The predicted salary is between 48000 - 72000 £ per year.

Job Description

Mechanical Engineer

Full Time | Hybrid + 9-Day Fortnight

West London

We’re recruiting on behalf of a leading UK defence technology organisation, delivering advanced engineering solutions for naval and maritime applications. Their systems support critical missions across allied defence forces, with a focus on innovation, precision, and performance in the most challenging environments.

This is a fantastic opportunity for a Mechanical Engineer with experience in complex enclosure design to join a collaborative, multi-disciplinary team working on cutting-edge maritime technology.

The Role

  • Develop mechanical design concepts and feasibility studies for new and existing products
  • Lead the design of complex enclosures used in subsea, naval, and defence applications
  • Work closely with electrical, systems, and manufacturing engineers to deliver integrated solutions
  • Contribute to proposals and R&D initiatives that support future business opportunities

What You’ll Need

  • Degree (or equivalent) in Mechanical Engineering
  • Solid experience with 3D CAD tools – ideally Creo and/or AutoCAD Inventor
  • Understanding of manufacturing methods for electrical enclosures (fabrication, machining, castings, welding, coatings)
  • Strong grasp of materials selection and mechanical design under requirements like thermal, EMC, and shock
  • Excellent communication skills and the confidence to present ideas and designs to stakeholders
  • A proactive, self-motivated approach with a willingness to learn and shape future processes
  • Security Clearance: You must be eligible to obtain UK security clearance

Why Apply?

  • Work on technologies that protect and support naval missions around the world
  • Be part of a forward-thinking company that values work-life balance and flexible working
  • Enjoy every other Friday off with a 9-day fortnight
  • Join a diverse, inclusive team with a supportive culture and exciting growth plans

If you’re an experienced engineer ready to make an impact in a high-tech, mission-critical sector — we want to hear from you.

Apply now to take the next step in your engineering career.

Senior/Principal Mechanical Design Engineer employer: STR Group

Join a leading UK defence technology organisation that prioritises innovation and employee well-being, offering a hybrid work model and a unique 9-day fortnight schedule. With a strong focus on collaboration and professional development, you'll be part of a diverse team dedicated to delivering advanced engineering solutions for critical naval missions. This is an excellent opportunity to grow your career in a supportive environment that values work-life balance and encourages contributions to cutting-edge maritime technology.
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Contact Detail:

STR Group Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior/Principal Mechanical Design Engineer

✨Tip Number 1

Network like a pro! Reach out to your connections in the engineering field, especially those who work in defence technology. A friendly chat can lead to insider info about job openings or even a referral.

✨Tip Number 2

Show off your skills! Prepare a portfolio showcasing your best mechanical design projects, especially those involving complex enclosures. This will give you an edge when discussing your experience with potential employers.

✨Tip Number 3

Ace the interview! Research the company and its projects thoroughly. Be ready to discuss how your experience aligns with their needs, particularly in naval and maritime applications. Confidence is key!

✨Tip Number 4

Don’t forget to apply through our website! We’ve got loads of opportunities that might be perfect for you. Plus, it’s a great way to ensure your application gets seen by the right people.

We think you need these skills to ace Senior/Principal Mechanical Design Engineer

Mechanical Design
3D CAD Tools
Creo
AutoCAD Inventor
Complex Enclosure Design
Manufacturing Methods
Materials Selection
Thermal Requirements
EMC Requirements
Shock Requirements
Communication Skills
Stakeholder Presentation
Proactive Approach
Self-Motivated
Willingness to Learn

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that match the job description. Highlight your experience with 3D CAD tools and complex enclosure design, as these are key for this role.

Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about mechanical engineering and how your background aligns with our mission. Don’t forget to mention your proactive approach and willingness to learn!

Showcase Your Communication Skills: Since excellent communication is crucial, consider including examples of how you've effectively presented ideas or collaborated with multi-disciplinary teams in your application.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from us!

How to prepare for a job interview at STR Group

✨Know Your Design Inside Out

Make sure you’re well-versed in your mechanical design concepts, especially those related to complex enclosures. Be ready to discuss your previous projects and how they align with the role's requirements, particularly in subsea and naval applications.

✨Showcase Your CAD Skills

Since experience with 3D CAD tools like Creo and AutoCAD Inventor is crucial, prepare to demonstrate your proficiency. Bring examples of your work or be ready to discuss specific challenges you faced while using these tools.

✨Understand Manufacturing Methods

Brush up on various manufacturing methods relevant to electrical enclosures, such as fabrication and welding. Being able to discuss how these methods impact design decisions will show your depth of knowledge and practical understanding.

✨Communicate Clearly and Confidently

Excellent communication skills are key for this role. Practice presenting your ideas and designs succinctly, as you’ll need to convey complex information to stakeholders. Confidence in your delivery can make a big difference!

Senior/Principal Mechanical Design Engineer
STR Group

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  • Senior/Principal Mechanical Design Engineer

    Northolt
    Full-Time
    48000 - 72000 £ / year (est.)

    Application deadline: 2027-09-29

  • S

    STR Group

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