Senior Mechanical Design Engineer in Denham

Senior Mechanical Design Engineer – Denham

Design it.

Develop it.

Engineer it to save lives.

Step into a role where world‑class mechanical engineering protects those who protect us.

As a Senior Mechanical Design Engineer within our Mechanical Engineering team at Denham, you will lead the design and development of safety‑critical aerospace systems that perform in the most demanding environments.

From initial concept through to production and in‑service support, your expertise will help deliver innovative engineering solutions that make a real difference.

• What You’ll Do
• Lead the design and development of mechanical engineering solutions from concept through qualification, production and in‑service support.
• Produce and approve high‑quality engineering drawings, 3D CAD models and technical documentation.
• Develop engineering specifications from customer, regulatory and programme requirements.
• Carry out structural and performance calculations using hand calculations, spreadsheets and finite element analysis (FEA).
• Produce engineering documentation including BOMs, DFMEAs, stress reports, tolerance analyses and technical files.
• Participate in design reviews, trade studies and engineering investigations to identify optimum technical solutions.
• Support product trials, installations, customer visits and engineering reviews.
• Conduct clearance, retrofit and interchangeability assessments to support product development.
• Identify technical risks and drive improvements to product performance, manufacturability and quality.
• Mentor and support junior engineers, sharing technical knowledge and best practice.
• What We’re Looking For
• Degree (2:1 or above) in Mechanical Engineering, Aerospace Engineering or equivalent experience.
• Significant experience in mechanical design within aerospace, defence or another highly regulated engineering environment.
• Strong experience using 3D CAD software, ideally Siemens NX.
• Excellent understanding of engineering drawings, GD&T and mechanical design principles.
• Experience of structural and performance calculations, including FEA.
• Strong knowledge of materials, manufacturing processes and Design for Manufacture & Assembly (Df MA).
• Excellent analytical and problem‑solving skills with sound engineering judgement.
• Strong communication skills with the ability to produce and present technical information.
• Experience working collaboratively within multidisciplinary engineering teams.
• Chartered Engineer (CEng), or working towards professional registration (desirable).
• Experience with motion simulation tools such as NX Motion or ADAMS (desirable).
• Knowledge of aerospace or defence standards including MIL‑STD or Def Stan (desirable).
• Experience supporting CE certification activities (desirable).
• Share and demonstrate the Martin‑Baker values.

Our Values

At Martin‑Baker, we value professionalism, understanding, teamwork, humility, accountability and integrity.

We look for people who take pride in their work, collaborate openly and act with care because the work we do matters.

What We Offer

• Excellent pension package with strong employer support — Martin‑Baker contributes 9% of your salary (non‑contributory to the employee), with further employer contributions that grow as you increase your own.
• Life Assurance.
• Lunchtime finish on a Friday.
• Personalised training and development plan.
• Healthcare plan.
• 25 days annual leave plus bank holidays.
• Opportunity to purchase additional annual leave.
• Martin‑Baker+ retail discounts platform.
• Occupational Health team.
• Workplace Nursery Benefit scheme.
• Cycle to Work scheme.

We believe in equal opportunity and are committed to creating an inclusive environment where everyone is respected and supported to do their best work.

Martin‑Baker is a signatory to the Armed Forces Covenant, demonstrating our continued support for the Armed Forces community and their families.

This role is subject to pre‑employment screening in line with the UK Government's Baseline Personnel Security Standard (BPSS).

The role also involves access to information governed by U.

Export Control Laws (including ITAR); therefore, all applicants must satisfy ITAR eligibility requirements.

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