Principal Mechanical Engineer — Defense Enclosures

Ultra Cyber Limited; England; On-site; GBP 75,000 - 110,000; Full time

Job summary

Cyber Business seeks a Principal Mechanical Engineer to lead mechanical design from concept to production for secure products. You will validate requirements, document analyses and develop robust solutions using CAD tools and engineering workflows.

This role emphasizes defence standards, TEMPEST and EMC compliance, and close collaboration with production. You will drive 3D CAD modelling, drafting, and analysis, including stress, thermal and FEA/CFD methods, while guiding BOM management in PLM

Qualifications

• Degree in Mechanical Engineering or closely related discipline.
• Strong understanding of materials science, mechanics, stress and thermal analysis.
• Experience designing rugged electronic enclosures for defence.
• Extensive 3D CAD modelling and drafting, Creo preferred.
• Experience with stress and thermal analysis using hand calculations, FEA and CFD.
• Experience with PLM systems, Windchill preferred, and BOM management.
• Ability to multi-task and deliver under pressure.
• Ability to produce precise engineering drawings to BS8888.

Responsibilities

• Define and manage mechanical design requirements, ensuring validation and verification.
• Develop and deliver robust mechanical solutions using CAD and engineering toolsets.
• Create and peer review artefacts including drawings, design data packs, analysis reports, plans and procedures.
• Define, analyse and document predicted mechanical behaviours and performance.
• Optimize design for machined, injection moulded, extrusion, sheet metal and casting parts.
• Perform tolerance analysis of close tolerance parts and complex assemblies.
• Produce mechanical designs for systems meeting MIL–STD and DEF–STAN, EMC and TEMPEST requirements.
• Create and review high–quality drawings to BS8888 standard.
• Select optimum engineering materials and finishes for cost and performance.
• Design production jigs and fixtures with production engineers.
• 3D Print and scan components; produce rapid prototypes.
• Develop mechanical test solutions and procedures to verify product.
• Liaise with production and supply chain to transition to manufacture.

Skills

3D CAD modelling

Stress analysis

Thermal analysis

Vibration analysis

Materials science

Manufacturing processes

Assembly techniques

Engineering mechanics

Heat transfer

Defense industry experience

Education

Degree in Mechanical Engineering or related discipline

Tools

Creo CAD v7+

Windchill PLM

PLM/BOM management tools

ERP interfacing

Job description

Cyber Business seeks a Principal Mechanical Engineer to lead mechanical design from concept to production for secure products. You will validate requirements, document analyses and develop robust solutions using CAD tools and engineering workflows.

This role emphasizes defence standards, TEMPEST and EMC compliance, and close collaboration with production. You will drive 3D CAD modelling, drafting, and analysis, including stress, thermal and FEA/CFD methods, while guiding BOM management in PLM