Mechanical Design Engineer

Our Brackley based client is a leading designer and manufacturer specialising in prototype development and custom PCB assembly. We are seeking a skilled and motivated Mechanical Design Engineer with hands-on experience in sheet plastic fabrication, to join the growing team.

You will be responsible for designing custom enclosures, housings, and mechanical components primarily fabricated from plastic sheets using CNC machining, bending, bonding, and assembly techniques. This is a key role in delivering innovative, manufacturable, and cost-effective solutions across a range of sectors including electronics, telecoms, medical devices, and industrial equipment.

Key Responsibilities for the Brackley based Mechanical Design Engineer job:

• Design and develop plastic enclosures and components using CAD software (e.G., SolidWorks, Autodesk Inventor).
• Create detailed 2D technical drawings, 3D models, and assembly instructions for production.
• Work closely with in-house fabrication teams and CNC technicians to ensure feasibility and manufacturability.
• Collaborate with electronics engineers to integrate PCBs, connectors, displays, and mechanical fasteners into enclosure designs.
• Optimise designs for production techniques such as bending, bonding, heat staking, and insert installation.
• Select appropriate materials (e.G. ABS, polycarbonate, acrylic) based on mechanical and environmental requirements.
• Conduct design reviews and support prototyping, testing, and iterative improvements.
• Maintain accurate documentation and design records in accordance with ISO 9001 or similar standards.
• Liaise with clients or project managers to interpret briefs, gather feedback, and deliver to deadlines.

Skills & Experience required of the Mechanical Design Engineer:

• Degree or HND in Mechanical Engineering, Product Design, or a related field.
• Practiced experience in mechanical design, ideally with sheet plastic or custom enclosure projects.
• Proficient in 3D CAD(preferably SolidWorks).
• Strong knowledge of DFM (Design for Manufacture) for plastic machining and fabrication.
• Understanding of mechanical fasteners, thermal management, ingress protection (IP ratings), and tolerance stacks.
• Excellent problem-solving and communication skills.

Desirables for the Mechanical Design Engineer job based in Brackley

Experience with CAM software or CNC machinery.

Familiarity with rapid prototyping and low-volume production methods.

Knowledge of electronics packaging or box-build integration.

Familiarity with ISO 9001 quality systems or medical/industrial product standards.

To apply for this job of Mechanical Design Engineer, based in Brackley, please call Nicola King on / or your CV to for a confidential discussion.