PRS
Mechanical Design Engineer
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Mechanical Design Engineer
Senior Mechanical Design Engineer
Position: Permanent, Full-Time Location: North Wales (commutable from Bangor, Conwy, Dolbenmaen, Pwllheli, St Asaph, Isle of Anglesey) Salary: Circa £50K + employee benefits Industry: Mobile Machinery & Heavy Fabrications (Defence/Global Projects)
About the Role
PRS Engineering has partnered with a high-value mobile machinery and defence-sector equipment manufacturer specialising in global complex engineering projects. To support rapid expansion and new contract wins, they are seeking a Senior Mechanical Design Engineer (senior/intermediate) to lead advanced mechanical design, regulatory compliance, optimisation and certification across concept to production.
The role spans structural analysis, materials engineering, technical documentation, risk management and customer validation, ensuring products meet defence, EU/UK (CE/UKCA) and international compliance standards.
Key Responsibilities
Mechanical Design & Engineering
- Lead mechanical system design from concept to production for mobile machinery (defence/industrial).
- Integrate hydraulic systems into designs, ensuring performance, safety and multi-system compatibility.
- 3D modelling & drafting: Develop designs in PTC Creo, including detailed engineering drawings.
- FEA & simulation-driven design for stress analysis, fatigue assessment and load validation.
- Collaborate with electrical, controls, manufacturing and quality teams for cross-functional integration.
- Ensure manufacturability, cost-effectiveness and defence-compliant engineering standards.
- Support prototype builds, testing, troubleshooting and field issue resolution.
- Maintain Bill of Materials (BOMs) in [ERP (Navision/Business Central)] and PLM ([Windchill]) systems.
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Regulatory Alignment & Technical Documentation
- Ensure compliance with EU/UK law: CE, UKCA marking & mobile machinery directives.
- Prepare technical documentation, risk assessments and declarations of conformity.
- Maintain up-to-date knowledge of defence, safety and regulatory frameworks (e.g., Machinery Regulation, OHSAS standards).
- Coordinate with approved/notified bodies as needed.
- Manage customer acceptance activities, including audits, inspections and compliance evidence.
- Support defence-sector traceability and customer-specific quality requirements.
- Handle environmental/durability testing and regional compliance matters.
Structural & Materials Optimisation
- Conduct topology, shape and size optimisation to enhance performance while reducing weight.
- Apply simulation-driven design for geometry refinement and load path analysis.
- Lead material selection, balancing performance, sustainability, manufacturing constraints and cost.
- Assist suppliers in evaluating advanced material technologies.
- Validate optimisation decisions through prototyping and mechanical testing.
Risk & Quality Assurance
- Conduct and document FMEA (Failure Mode, PFMEA, DFMEA) to compliance standards.
- Implement and verify risk reduction measures at every design stage.
- Align designs to defence-sector safety, tolerances and standard expectations.
Experience & Qualifications
Education
- Bachelor’s degree in Mechanical/Automotive/Aerospace Engineering (or closely related field). Master’s/postgraduate studies in: mechanical design, structural engineering or materials science (advantageous).
- Additional training in CE/UKCA conformity, functional safety or defence standards (linked benefit).
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Professional Experience
- 5+ years specialising in:
- Mechanical design for mobile machinery, defence systems or regulated industrial equipment.
- Design lifecycle: concept → prototyping → production → validation.
- Technical documentation and regulation alignment (CE/UKCA, notified bodies).
- FEA, FEM stress/analysis for structural/performance-critical components.
- Experience in specialist materials engineering and weight/efficiency optimisation.
- Knowledge of compliance inspections, traceability and quality procedures in export/defence markets.
Technical Skills
- Proficiency in PTC Creo (CAD) and FEA software (stress/optimisation tools).
- Working understanding of hydraulic systems and their design interfaces.
- Bonus: Hands-on experience with
- Low-voltage/hydraulic control systems & CANBUS architectures,
- ERP/PLM systems ([Navision, Windchill]),
- Comprehensive grasp of defence material standards.
Soft Skills
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Sharp analytical and problem-solving abilities.
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Demonstrated proficiency in detailed technical writing and documentation.
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Strong cross-functional collaboration—balancing stakeholder needs effectively.
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Meticulous attention to detail with an engineering-first mindset.
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Self-motivated with a focus on process improvement and continuous optimisation.
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Optional travel may be required for international engagements.
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