Senior Mechanical Design Engineer

Senior Mechanical Design Engineer ARCA is supporting an engineering business to bring in an experienced Mechanical Design Engineer on a contract basis. This is a hands-on role focused on the design, development and…

Outside IR35 Hybrid Engineering
Pay rate £40 – £50/hour
Contract type Contract
Posted 27 September 2026

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About this contract

Senior Mechanical Design Engineer

ARCA is supporting an engineering business to bring in an experienced Mechanical Design Engineer on a contract basis.

This is a hands-on role focused on the design, development and engineering validation of heavy-duty vehicles and mechanical equipment, taking designs from concept through to manufacture.

The work:

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Mechanical design and development of heavy-duty vehicles and machinery

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3D CAD, assemblies and detailed manufacturing drawings

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Design of fabricated structures, machined components and welded assemblies

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Engineering calculations and FEA to validate mechanical designs

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Analysis of stress, heat, fluid flow and vibration

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Material selection, tolerancing, fits and technical specifications

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Design for manufacture and assembly

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Prototype development, testing and validation

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Improving existing designs for performance, reliability, manufacturability, weight and cost

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Investigating technical and manufacturing issues and developing practical engineering solutions

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Working closely with manufacturing, quality, procurement and suppliers

What they’re looking for:

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Strong mechanical design experience within heavy machinery, off-highway, construction/agricultural equipment, specialist vehicles or another relevant heavy engineering environment

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Proven experience taking mechanical designs from concept through to manufacture

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Strong knowledge of fabricated structures, metals, machining and welding

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Hands-on engineering calculations and FEA experience

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Experience across structural/stress analysis, with exposure to thermal, fluid flow and/or vibration analysis

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Strong understanding of DFM/DFA and practical manufacturing processes

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Experience working with large mechanical assemblies

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SOLIDWORKS experience preferred

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Ability to work independently, make sound technical decisions and take ownership of engineering deliverables

Details:

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Contract: 3-6 months initially – Outside IR35

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Location: North Cambridgeshire – hybrid working

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