Senior Mechanical Design Engineer

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Senior Mechanical Design Engineer
6 months initial (Inside IR35) – 4 days p/week on site (Buckinghamshire)
Copello is recruiting for a Senior Mechanical Design Engineer to join our clients Avionics Business Unit. You will be supporting a portfolio of aerospace products for both military and civilian applications.
Key Responsibilities
• Lead mechanical design activities for new product developments.
• Produce detailed designs using 3D CAD (SolidWorks ), and simulate mechanical behaviour using FEA and CFD tools.
• Prepare technical estimates for non-recurring costs and manpower.
• Manage technical aspects of external suppliers and outsource providers.
• Liaise with internal and external stakeholders, including customers.
• Conduct tolerance analysis including Geometric Dimensioning and Tolerance.
• Act as Project Engineer when required, supporting bids and development.
• Coach and mentor junior mechanical engineers.
• Generate and amend drawings and documentation to BS8888 standards.
• Support continuous improvement initiatives across processes and tools.
Skills & Experience
• Strong background in aerospace or defence mechanical design.
• Proven expertise in 3D CAD (SolidWorks advantageous).
• Experience with FEA and CFD simulation tools.
• Familiarity with engineering lifecycle from concept to delivery.
• Knowledge of materials, finishes, and environmental implications.
• Understanding of composite design and production techniques.
• Experience in regulated industries such as aerospace, automotive, or medical.
• Chartered Engineer status (or working towards).
• Excellent communication and documentation skills.
• Requirements management experience.
Key Measures
• Demonstrated experience across full engineering product lifecycle.
• Ability to author, review, and approve engineering drawings to BS8888 and ISO standards.
• Strong grasp of structural analysis and thermal CFD.
• Ability to work independently and lead project teams.
• Commitment to sustainability and product support.
Security Clearance
Role will require candidates to have active SC clearance or eligibility for SC
Apply
Location:
Marlow
Job Type:
FullTime
Category:
Design Engineer, Engineer, Senior, Mechanical Design Engineer, Engineering, Design, Mechanical

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