At STG Aerospace, safety sparks innovation. Founded in 1995 with a bold mission to guide passengers to safety without power, we pioneered saf-Tglo™, the world’s first photoluminescent emergency exit path system. Since then, we’ve led the way in non-powered and LED lighting solutions that combine safety, smart engineering, and modern design. Now part of Heads Up Technologies, we continue to deliver award-winning solutions trusted by the world’s leading airlines reshaping the cabin experience, one innovation at a time.

About the role

We are seeking a highly skilled Senior Mechanical Design Engineer to design and develop lighting systems and components for next-generation products supplied to leading global aircraft manufacturers. This role is ideal for an engineer with deep technical expertise, a passion for aerospace innovation, and the drive to deliver solutions that meet the highest standards of safety, reliability, and performance.

You will be directly contributing to products that shape the future of commercial aviation. If you’re passionate about solving engineering challenges and bringing world-class mechanical solutions to life, this role is for you.

Key Details·        

• Lead the mechanical design of components, assemblies, and systems across the full product lifecycle.
• Develop CAD models, detailed drawings, and documentation to support manufacturing, testing and certification.
• Perform engineering analyses (thermal, stress, tolerance, FEA) to validate design performance.
• Collaborate with aircraft OEMs and cross-functional teams (manufacturing, quality, certification, supply chain) to ensure seamless integration into aircraft platforms.
• Apply principles of DFM to ensure designs are efficient, cost-effective, and production ready.
• Ensure compliance with aerospace regulations, specifications, and customer requirements (e.g., FAA, EASA, AS9100).
• Research new materials, technologies, and processes to drive innovation.
• Support prototyping, testing, and troubleshooting of mechanical designs.

What you'll do

·       Work on cutting-edge projects with a talented, multidisciplinary team.

·       Opportunities for technical ownership and growth.

·       Work with an innovative, collaborative environment where your work makes a real impact.

What will make you successful in this role (skills)?

• Bachelor’s or Master’s degree in Mechanical Engineering or related field.
• 7+ years of experience in mechanical design engineering.
• Proficiency with CAD tools (e.g. SolidWorks or equivalent).
• Strong knowledge of materials, manufacturing processes, and mechanical systems.
• Hands-on experience with prototyping and testing.
• Strong analytical and problem-solving skills.
• Excellent attention to detail and ability to meet deadlines in a fast-paced environment.
• Be driven by excellence & attention to detail
• Be energetic & creative
• Demonstrate a 'Can do' attitude
• Self-motivated/self-starter
• Be flexible and work as part of a team.

Perks and Benefits

• 25 days Annual Leave; plenty of time to recharge
• 8 Bank Holidays; for rest and celebration
• Christmas Shutdown; companywide festive break (allocated from annual leave allowance)
• 37.5 Hour working week; full time schedule that respects your time
• Early Finish Friday; end your week at 1pm every Friday
• Company Pension 5% employer contribution
• Death in Service; financial peace of mind for your family
• Annual Bonus Scheme; based on company and individual performance; when we win you win
• Free Annual Eye Test; Supporting your vision and work comfort
• Cycle to Work Scheme; healthy, sustainable commuting
• Employee Assistance Programme (EAP); confidential support for life’s challenges

Why Us?

At STG Aerospace, you have the opportunity and support to reach for the sky collaborating internally and with partners to deliver artistry in engineering.

Every position in our company has its unique responsibilities, but they all require the same traits: motivated, self-starter, creative, enthusiastic and dependable. A team player that has respect for the opinions and input of others. Performance- and process-driven. Someone who gives 110% at work but still seeks balance by making time with family and hobbies a priority.

Did this post spark something in you? If so, we’re looking forward to reviewing your CV!

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