Mechanical Design Engineer - Contractor

Breath HR; Coventry; Hybrid; GBP 74,000 - 120,000; Full time

Job summary

Breath HR is seeking a Mechanical Design Engineer (Contractor) to design enclosures for electrical and electronic systems across electrification, including battery management and EV control systems. You will package components, harnesses and cooling into manufacturable enclosures.

You will produce 2D drawings from 3D models, manage BOMs, and collaborate with electronics and EDS teams as well as suppliers to optimise designs for manufacturability and cost.

Qualifications

• Degree in automotive, electrical/electronic or mechanical engineering.
• 5+ years of packaging and modelling experience for electrical assemblies and HV/LV wiring harnesses.

Responsibilities

• Develop enclosures with mechanical component packaging to support modules and harnesses.
• Produce 2D manufacturing drawings from 3D models.
• Develop 3D wiring harness models within enclosures.
• Manage thermal interfaces including cooling solutions.
• Support manufacture reviews and optimise for manufacturability and cost.
• Manage component databases and BOMs in line with project milestones.

Skills

Mechanical design

3D modeling

Thermal management

Problem solving

Communication

Education

Degree in automotive/electrical/mechanical engineering

Tools

Catia V5/V6

NX

Job description

Mechanical Design Engineer (Contractor) (VRF-087)

UK & Prague

Vacancy listed 15/07/2026

Details

Role Purpose:

We require a Mechanical Design Engineer to design enclosures for electrical and electronic systems for a wide range of customer applications focussed on electrification, including battery management, power conversion and electric vehicle control systems. The successful candidate will package custom and off-the-shelf electrical/electronic components, external connectors, low-voltage harnesses and high-voltage/current interconnect into custom or modified enclosures, dealing with cooling requirements and meeting relevant industry standards and produce cost-effective and manufacturable designs. They will liaise with suppliers and manufacturers and work with the wider multi-disciplinary engineering team to support the delivery of effective engineering solutions.

Key Responsibilities:

• Work closely with the electronics and EDS team and other engineering disciplines, to develop modern, innovative, and practical electrical system solutions
• Design of enclosures with electro-mechanical component package modelling and associated mechanical fixings, etc. to support modules and harnesses.
• Design of solid components from folded sheet metal, machined solid or 3D printed plastic
• Production of 2D manufacturing drawings from 3D models and designs
• Develop 3D wiring harness models within the enclosure
• Management of thermal interfaces such as cooling fins, liquid flow-through cold plates and vapour chambers
• Support Design for Manufacture reviews and work with suppliers and manufacturing partners to optimise designs for manufacturability and cost
• Develop and manage component database for electrical components for 3D packaging
• Manage assembly structures and BOMs, adhering to company engineering change control processes
• Delivery of engineering tasks and reporting of progress and issues in line with project milestones.

Qualifications, Experience and Skills Required:

• Degree or similar in automotive, electrical/electronic or mechanical engineering
• Extensive experience (5 years+) relevant design experience of packaging and modelling of electrical assemblies and components and LV & HV wiring harnesses gained across multiple projects in a prototyping and production environment.
• Experience of creating 2D component drawings and manufacturing assembly drawings
• Experience of creating and maintaining 3D electrical component database/ catalogue.
• Experience of thermal management techniques including liquid cooling
• Advanced capabilities in ECAD software tool e.g., Catia V5/V6 or NX

Preferred:

• Experience of working in a relevant industry (such as automotive, rail, marine, energy storage aerospace)
• Experience of high voltage busbar/PDU design and required creepage/clearance rules
• Understanding of structural / stress / finite element analysis

System or Knowledge:

• Knowledge of GT&D and the correct application into component manufacturing drawings.
• Knowledge of relevant material science including thermal properties, corrosion resistance (including galvanic corrosion), strength and durability.
• Understanding of mechanical manufacturing processes and Design for Manufacture/Assembly
• Understanding of tolerance analysis

Personal Attributes:

• Quality-focussed with an attention to detail
• Flexible and enthusiastic
• Good problem solving and analytical skills
• Strong communication skills – including report writing and presentation
• Self-motivated and enjoys working within a team environment
• Willingness to accept responsibility and challenges required to achieve objectives
• Commitment to professional development and continuous learning

Location and Travel:

• You must be eligible to work in the UK or CZK and have no restrictions for world-wide travel.
• This role is based at our Head Office in Coventry, UK, or our engineering Office In Prague, Czechia, with flexibility for remote working.
• Working hours are 0900 to 1700, 5 days a week, however some travel is expected, and flexible working patterns are essential to the role.