Senior Design Engineer

JR United Kingdom; Sheffield; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading company is recruiting a Senior Design Engineer to lead the mechanical design of innovative systems aimed at transitioning away from fossil fuels. You will engage in detailed 3D CAD modeling, integration tasks, and ensure compliance with safety standards, all while working collaboratively in a fast-paced environment. This role offers an exciting opportunity to contribute to sustainable engineering solutions within a high-growth start-up.

Qualifications

• Proven experience in an engineering design role, ideally in complex system environments.
• Comfortable in a fast-paced, development-stage company.
• Experience designing equipment for shipping containers or compact spaces.

Responsibilities

• Lead mechanical design of modular hydrogen systems in shipping containers.
• Create detailed CAD models and assembly drawings.
• Conduct mechanical stress calculations for safety.

Skills

Mechanical Design

3D CAD

Documentation Skills

File Management

Education

Degree in Mechanical or Design Engineering

Tools

SolidWorks

AutoCAD

Job description

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Senior Design Engineer, sheffield, south yorkshire

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Client:

Cranleigh STEM, Sustainability & SHEQ Recruitment

Location:

sheffield, south yorkshire, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

1

Posted:

06.06.2025

Expiry Date:

21.07.2025

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Job Description:

Cranleigh STEM is proud to partner with a high-growth start-up developing breakthrough technology to accelerate the transition away from fossil fuels.

The company is now recruiting for a Senior Design Engineer to take ownership of mechanical design and container integration for their systems. This role offers the opportunity to contribute to the development of first-of-a-kind systems in a fast-paced, hands-on environment.

• Lead the mechanical design of modular hydrogen systems packaged into standard shipping containers, incorporating process units, pipework, valves, and instrumentation.
• Create detailed 3D CAD models and part/assembly drawings using SolidWorks or AutoCAD.
• Design custom components in a variety of materials (stainless steel, glass, ceramics), producing fabrication-ready specifications for suppliers.
• Generate general arrangement drawings and BOMs; integrate supplier models into internal design workflows.
• Conduct mechanical stress calculations to ensure structural integrity and safe operation.
• Work closely with external suppliers and fabrication partners to ensure components meet technical and quality requirements.
• Support prototype build and assembly, including preparation of clear work instructions for mechanical fitting.
• Ensure compliance with UK and international standards, including safety and regulatory requirements.
• A degree in Mechanical or Design Engineering, or relevant professional experience.
• Proven experience in an engineering design role, ideally within complex system environments.
• Proficient in 3D CAD (SolidWorks, AutoCAD or equivalent).
• Strong file management, drawing control, and documentation skills.
• Comfortable working in a fast-paced, development-stage company environment.
• Experience designing equipment for installation in shipping containers or compact spaces.
• Knowledge of CE/UKCA compliance processes and documentation.
• Experience working with flammable gases or in ATEX/Ex-rated environments.
• Familiarity with solid particle conveyance systems in hazardous conditions.
• Prior involvement in a start-up or early-stage product development setting.