Mechanical Design Engineer – Defence and Aerospace

Positiv Cohort Ltd

. Develop detailed 3D CAD models and engineering drawings for mechanical and electro-mechanical assemblies .

Posted 11/12/2026contractStevenage • United KingdomMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in Mechanical Engineering with a strong focus on 3D CAD modeling, engineering design, and product lifecycle management. Proficient in conducting tolerance analyses, mass property calculations, and ensuring compliance with industry standards.

Highest-signal resume keywords

Mechanical Engineering Degree3D CAD Experience (PTC Creo)Tolerance AnalysisDesign for Manufacture (DFM)Engineering Bills of Materials (BOMs)

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

3D CAD ModelingTolerance StudiesMass Property CalculationsDesign AssessmentsStructural Mechanical DesignEngineering Standards ComplianceDesign for Assembly (DFA)Product Lifecycle Management (PLM)Cable Harness RoutingEnvironmental Sealing Design

Soft Skills

Clear Technical CommunicationCollaboration with Multidisciplinary Teams

Industry Keywords

AerospaceDefenceMaritimeSafety-Critical IndustriesControlled Design Environments

Tech Stack

Tools & technologies

Assembly

About the role

Key responsibilities & impact

Develop detailed 3D CAD models and engineering drawings for mechanical and electro-mechanical assemblies
Create and maintain engineering Bills of Materials (BOMs) and associated product definition data
Perform tolerance analysis and design assessments to ensure robust product performance
Conduct mass property calculations including weight, centre of gravity and balance considerations
Support design for manufacture and design for assembly activities throughout the development lifecycle
Design and develop structural components, housings, brackets and supporting mechanical assemblies
Participate in formal design reviews and technical assessment activities
Collaborate closely with systems, manufacturing, electronics, test and project engineering teams
Ensure designs comply with relevant industry and engineering standards
Support product verification, integration and development testing activities
Contribute to continuous improvement of engineering processes and design practices
Work throughout the product lifecycle from concept development through detailed design, verification, manufacture and design reviews

Requirements

What you’ll need

Degree qualified in Mechanical Engineering or a related discipline
Significant experience in mechanical design and development of complex engineering products
Strong 3D CAD experience, ideally using PTC Creo
Experience creating and maintaining engineering BOMs
Proven ability to perform tolerance studies and dimensional analyses
Experience completing mass property calculations and design assessments
Strong understanding of Design for Manufacture (DFM) and Design for Assembly (DFA) principles
Experience of structural mechanical design
Familiarity with engineering standards and controlled design environments
Experience working within multidisciplinary engineering teams
Ability to communicate technical information clearly at design reviews and stakeholder meetings
Desirable: Experience of cable harness routing and electro-mechanical integration
Desirable: Environmental sealing and gasket design experience
Desirable: Experience within defence, aerospace, maritime or safety-critical industries
Desirable: Understanding of product lifecycle management (PLM) and configuration control processes
Desirable: Familiarity with qualification, verification and validation activities
Desirable: Knowledge of manufacturing techniques including machining, fabrication and assembly processes