Principal Electronics Engineer

  • Full Time
  • Bristol

Website WTHBristol WTHub Client



Meaningful work. Exceptional people

The company develop extraordinary and smart technologies designed to improve the lives of women. It’s a fascinating and challenging area that requires them to solve problems that no one else has ever tackled before.

How do they like to work?

You will be surrounded by people who want to improve everything and everyone around them. People who are passionate about their mission. People who are driven to solve tough problems and constantly consider the best ways to improve the health and wellbeing of women.

They’re deeply proud of their values, which are intrinsic to the way they behave every day. They take them seriously because they want their culture to thrive:

  • They’re fearless – They tackle taboos and break boundaries, requiring sensitivity and courage.
  • They’re innovators – They are passionate, curious and data-driven. They are constantly learning how to work smarter, faster and better. Always embracing change and innovation.
  • You’re in it together – Together, through constantly learning, embracing change and seeking innovation, whilst having fun along the way. They stay authentic and embrace differences.

Who you are

  • You are flexible in your approach to work and appreciate when you need to be thorough and when you need to be fast.
  • You are open about the mistakes you make, and you fail fast and learn quickly. You take critical review well and see it as a positive, you understand it makes for a better product.
  • You can take your technical expertise and communicate it to non-technical peers whilst showing patience and understanding towards them. You can take non-technical design requirements and propose technical approaches to solve them.
  • You are willing to help in areas outside your skill set. You understand we are all working towards the same goal.
  • You are passionate and enthusiastic about technology and not afraid to share that enthusiasm with others.
  • You will lead by example, clearly demonstrating best practice with a hands-on approach.
  • You appreciate fast-changing technology and are willing to embrace new technology and methods to solve problems even if it is outside of your comfort zone.
  • You are not afraid of saying you don’t know but you are passionate to find out.

Words that may describe you:

    • Passionate, tech enthusiast, highly technical, trusted, expert, approachable, non-judgemental, problem solver, pragmatic, mentor

What you’ll be doing

  • You will work closely with the Electronics Team Lead to grow and develop the team.
  • You will work closely with the Electronics Team Lead to support and guide internal project development.
  • You will help improve existing process and procedures to work towards international gold standards for medical device development.
  • You will act as a multiplier by building systems, authoring tools, or introducing policies or patterns that raise the level of productivity of the entire company.
  • You will guide and help members of the team in projects other than your own and be seen as a role model and mentor.
  • You will be able to quickly break down complex problems into potential solutions while also highlighting the immediate risks
  • You will design brave, exciting and cutting-edge wearable products for women in a newly emerging femtech industry.
  • You will see your design progress from concept to mass production and beyond
  • You will liaise with other departments (Operations, Procurement, Manufacturing, Project Management to name a few) to understand their requirements or challenges and then provide solutions to help them
  • You will draw schematics and layout PCBs to meet design requirements, this may include designing supporting test equipment to aid product development and mass manufacture
  • You will peer review and update prototype designs and adapt them for mass manufacture considering any requirements for regulatory certification (e.g., FCC, FDA, CE)
  • You will source components for your designs and create costed BoMs
  • You will order and manage lead times for components and PCBs while meeting with various vendors to develop business relationships
  • You will write, test and debug firmware for products should they require a microcontroller. Sometimes you may need to develop software to support firmware development and mass manufacturer testing.
  • You will provide technical support for customer care and other departments for existing products in the field
  • You will keep up to date on the latest news in the electronics industry evaluate upcoming novel technologies that may lead to future product ideas


  • You should have demonstrable experience equivalent to 10 years in the industry
  • You will have experience with reviewing work of peers and managing their workflow
  • You have a good understanding of product development life cycles / liaising with Contract Manufacturers
  • A degree in science or engineering or equivalent vocational experience
  • A solid understanding of electronic theory
  • Drawing of schematics and drafting PCB layouts with an appreciation for EMC, Design for Manufacture (DFM) and Design for Cost (DFC) when appropriate using a PCB design package.
  • You can compile fabrication packs of your designs for PCB manufacturers and source components to create costed bill of materials
  • You can research existing and novel technical solutions to solve design requirements and have experience with various silicon vendors
  • Demonstrable ability to develop firmware using C/C++ programming language or other appropriate languages, tools and toolchains. This will also include fault finding and debug hardware and firmware using various techniques and equipment including logic analysers, oscilloscopes, and debug probes

Desirable skills

  • You have experience of Medical Device development
  • You have an understanding of key regulatory standards including IEC 60601, IEC 62304
  • You are comfortable with software development to aid in your hardware and firmware development with languages such as python
  • You have experience in MCUs including ARM Cortex M design and development this may include various connectivity protocols including Bluetooth Low Energy and WiFi
  • You are comfortable with repositories and versioning of hardware and firmware files
  • You are comfortable using Altium Designer to draw schematics and PCB layout
  • You are comfortable with unit and integration testing throughout the development of your firmware


They are looking after you. As well as the chance to develop products with real work impact and working with dedicated and passionate colleagues, their benefits have flexibility and wellbeing in mind with:

  • Great work environment – regular company socials, free daily snacks
  • A flexible work environment built on trust and autonomy
  • Enjoy employee/friends & family discounts on their products
  • Generous employee referral program
  • Cycle Scheme & Tech Scheme
  • A tax-efficient group pension scheme with SmartPension
  • Life Insurance with Yulife
  • Medical, Dental & Optical cash-plan with WPA
  • Employee Assistance Program for you and your family
  • YuLife Well-being app & access to SmartHealth app with unlimited GP appointments for you and your family, plus various well-being initiatives throughout the year

The company believe in having diverse teams in which everyone can be their authentic self is key to their success. They encourage people from underrepresented backgrounds to apply and  don’t discriminate based on race, colour, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, marital status, disability or age. They are a family-friendly employer with a culture based on trust, autonomy and flexibility, and are working on making our offices wheelchair friendly and breastfeeding friendly. They do their best to accommodate part-time requests and flexible requests as much as possible. They are also a member of UK Tech Talent Charter and proudly working in partnership with myGwork and Women’s tech hub.

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