Mechanical Design Engineer

  • Full-time

Company Description

We are an ally for the grid, the people and the planet. Our battery energy storage makes energy more affordable, cleaner and accessible for everyone so that every factory, business and home to reduce their energy bills by up to 50% while providing flexibility to the grid to lower costs and accelerate decarbonisation.

Our first system, the Allye Max, is an innovative 320kWh mobile energy storage system using repurposed electric vehicle batteries. It is two-times cheaper and has 60% lower embedded CO2 than other similar systems. Our teams are developing the hardware and software solutions to transform our energy is managed at the grid-edge.

Job Description

Are you a mechanical engineer with an interest in and experience of body structures? Do you have a keen interest in automotive, motorsport, or energy storage, and can demonstrate your mechanical skills? If you are looking to work in a fast-paced start-up environment, we have an exciting opportunity for you.

Join our fast-growing London-based start-up, creating a new range of battery storage systems for commercial and consumer markets. As part of our team, you will be responsible for designing our energy storage systems and collaborating with our designers and engineers on the architecture layout.

This role offers the chance to make a lasting impact on the future of energy storage by being a key player in an emerging industry. Join us on this exciting journey and contribute to our continued success.

You will be based at our headquarters in West London, South Ruislip.



  • Lead body structures engineering
    Assist in designing and developing mechanical systems, products, and components using computer-aided design (CAD) software within packaging constraints.
  • Contribute to the development of Technical Specifications, Engineering Statements of Work (ESOWs), and Targets.
  • Support the selection and specification of materials, components, and equipment required for projects and create detailed CAD drawings.
  • Participate in feasibility studies and cost-benefit analyses to assess the viability of designs.
  • Assist in identifying and resolving design or manufacturing issues using CAD and analysis tools.
  • Aid in providing schemes, final designs, and release drawings that meet project requirements.
  • Support the creation of Request for Quotation (RFQ) and Request for Information (RFI) documents and assist in supplier engagement.
  • Help with engineering activities carried out by suppliers and partners, including design, development, testing, validation, and manufacturing.
  • Provide technical support to technicians and assist in the assembly and production of initial systems.
  • Support the engineering release process from initial concept to final manufacturing drawings.
  • Assist in the generation and maintenance of system and component-level Design Failure Mode and Effects Analyses (DFMEAs).
  • Support the development and management of Design Verification Plan and Report (DVP&R) schedules.
  • Prepare and assist in presenting technical presentations to suppliers and the team, addressing technical concerns and timing.
  • Attend design reviews and support package and vehicle integration meetings as needed.
  • Maintain awareness of industry standards, regulations, and emerging technologies.


  • MEng degree in mechanical, electrical, or automotive engineering.
  • Proficiency in CAD software (SolidWorks preferred but not mandatory).
  • Basic knowledge of materials, pressings, forming technologies, and advanced joining for volume manufacture, plus familiarity with additive processes for prototyping.
  • Relevant internship or project experience in an automotive, motorsport, or similar engineering environment.
  • Basic knowledge of system/component delivery within aframework (FMEA, quality planning, PPAP, etc.).
  • Basic understanding of High Voltage vehicle systems and safety.
  • Some experience or coursework related to electrical and mechanical EV components.
  • Ability to work proactively with guidance, using a logical approach in an environment with minimal documented processes.
  • Self-motivated and effective team player.
  • Eligible to work in the UK.


  • Experienced in utilising FEA analysis – Review & Interpretation of results to inform architectural/ material changes to meet target.
  • Knowledge of electrical systems
  • Knowledge of battery system technology including cell chemistries, BMS etc.
  • Workshop experience
  • Fabrication and welding experience

Additional Information

We believe that diversity drives innovation. Be a part of our journey to revolutionise the energy storage industry by introducing more sustainable and superior products to the market.