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Lead Power Electronics Engineer - BMS


Malmesbury - United Kingdom

About us

At Dyson we are encouraged to think differently, challenge convention and be unafraid to make mistakes. We’re creative, collaborative, practical and enthusiastic, but most of all we’re hugely passionate about what we do.  We are looking for individuals who wish to invent, design and develop leading products for the global market. By working in our world class Research Design and Development department, these individuals have the opportunity to work alongside other leading technical specialists and highly motivated creative people, to create products which fulfil our ambition of being truly different and better than our competitors.
Dyson products strive to be at the leading edge of technology.  Through unique strategic partnerships with global top universities and leading businesses, we gain foresight of up and coming technologies.  The Technical Research team aims to exploit this knowledge to design state-of-the-art products allowing us to differentiate from the competition and be ahead of the times. 

About the role

The Lead Power Electronics – BMS role will involve:
  • The development of battery management systems and assessment of alternative battery management solutions and topologies depending on the product requirements
  • Ensuring battery management systems meet regulatory and company requirements for safety
  • Charger design and writing detailed charger specifications
  • Power Converter Design.
  • Ensuring designs can comply with relevant EMC/EMI standards and modifying design where needed to ensure this is the case.
  • Thermal management design of power electronics systems
  • Design of both mains and battery powered electronics to meet global requirements.
  • Working with different product teams to gain an in depth product understanding, while using knowledge of the latest technologies to create innovative power electronics systems and solutions.
  • Research into new technology and investigating ways of incorporating this technology into future products.
  • Use of simulation and PCB design software to create prototypes.
  • Strong lab skills to build and test prototypes with minimal supervision.

As a Lead Engineer, the successful applicant will be expected to:
  • Develop the concept, proving key technologies and demonstrating the system feasibility
  • Produce clear, well written documentation prior to handover to the development teams
  • Take technical responsibility for the battery management system and associated power electronics content of a project. This may expand to the responsibility for multiple small concurrent projects, supported by a number of team members.
  • Demonstrate designs are safe, robust, cost effective and fit for purpose for a high volume manufacture environment, through detailed laboratory testing, simulation and analysis
  • Assist in the personal development of junior team members.

About you

Education and experience:
  • Minimum BEng/MEng degree in Electrical & Electronic Engineering or other relevant discipline 

Minimum technical knowledge:
  • Experience in the design of Battery Management Systems especially for Lithium-Ion technology.
  • Experience in motor inverter design and motor control, particularly brushless DC motors, servo or stepper motors desirable.
  • Knowledge of heater control hardware, control schemes and heater protection approaches desirable
  • General knowledge of power electronic devices, including silicon based IGBTs, MOSFETs and wide bandgap technologies
  • Understanding of device characteristics and issues with switching behaviour in real circuits, as well as power switch driver design 
  • Device selection - Interpretation of datasheets and knowledge of design methods to confidently select the lowest cost devices while achieving reliability targets
  • Knowledge and experience of using power hybrid modules and power SoC modules (e.g. drivers and power switches in one device)
  • Thermal management approaches for surface mount and through hole devices
  • SMPS and linear regulator power supply design 
  • Design of power electronics for both low voltage and mains voltage systems

Control circuit design:
  • Understanding of techniques for accurately monitoring small signals in high power, electrically noisy environments.
  • Excellent knowledge of analogue signal conditioning (e.g. op-amp circuit design) and ideally digital signal processing approaches
Design Tools:
  • Schematic capture using Altium Designer, Mentor Graphics or other main stream tools
  • Use of SPICE based simulation tools such as Simetrix and LTspice
  • Design calculation tools such as Mathcad, Matlab, Excel.

Design Techniques:
  • Circuit simulation and tolerance analysis
  • Robust design including FMEA techniques
  • Good quality engineering process understanding and appreciation
  • Design for high volume manufacture
  • PCB layout – size/cost minimisation while achieving layouts for inherently good EMC compliance and thermal design.

Essential behavioural skills:
  • The ability to take a leadership position within a project 
  • Good analytical ability and attention to detail
  • Ability to communicate appropriate, concise and accurate information in written and verbal format to engineers and up to executive level.
  • Ability to adapt or generate imaginative and innovative ideas, in line with core Dyson values
  • Ability to multi-task and plan effectively when working with a variety of project teams.
  • Excellent time management skills and ability to prioritise tasks
  • Excellent team working skills.

Essential practical skills:
  • Ability to build, test and modify prototypes accurately, safely and with minimal supervision
Additional experience that is desirable:
  • Experience with Flowtherm or similar thermal modelling packages


  • 27 days holiday plus eight statutory bank holidays
  • Pension scheme 
  • Performance related bonus 
  • Life assurance 
  • Sport centre 
  • Free on-site parking 
  • Subsidised café and restaurants 
  • Discounts on Dyson machines


Interview guidance

We are following the government guidelines regarding COVID19. At this time all interviews will be conducted via video or telephone. We’re taking these precautionary measures to protect both our employee and candidate wellbeing. Our Talent Acquisition team will work with you and provide further information as appropriate.