via indeed · 5 June 2026 ·today

Mechanical Engineer

Octopus Energy
Slough Full-time
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Help us make a big green dent in the universe. We're on a mission to drive the global renewable energy revolution, and we need loads more people to help us make our vision a reality.

We are seeking a passionate mechanical engineer to join our Product Engineering team at Octopus Energy as a Field Application Engineer. As a Field Application Engineer, you will play a crucial role in being the technical interface between the R\&D Design teams and the field installation and operations teams.

What you will do:


  • Be the main interface between the product design team and the field installation teams

  • Identify areas for improvement in all aspects of the system from design to manufacturing, installation and processes

  • Provide technical design advice and guidance to the field design teams

  • Work closely with the support, field and the operations teams, provide day to day support to all heat pump installs

  • Actively provide customer support as required

  • Continuously monitor the performance data (e.g. COP/SCOP) collected for every install, debug issues, maintain the issue log, and advise improvements

  • Maintain the spares list and update as a new product is introduced

  • Travel to customer sites as required, as well as to Portadown in Belfast to work closely with the R\&D and the manufacturing teams

  • Contribute to the training of the support and installation teams as required

  • Be the owner of technical documentations for installers, customers, logistics

  • Present technical solutions to the design team

  • Analyse warranty returns and interface with suppliers on technical discussions in finding the route cause

What you'll need


  • Degree in mechanical engineering or a similar discipline

  • 5\+ years experience in design of mechanical parts of a heating or a cooling product or system

  • Understanding of heat pump design and HVAC systems

  • Experience in retrofit and new build heating/cooling installs

  • Appreciation of smart electronic control systems relevant to heating/cooling system design

Desirable


  • Knowledge for heat pump components (e.g compressors, inverters, fans, evaporators, condensers), thermodynamics and refrigeration circuits, power electronics and hydraulic system design

  • Understanding of standard compliance, regulations and legislations relevant to heat pump design and residential installations (MCS, F\-gas, relevant EN specifications)
If this sounds like you then we'd love to hear from you.

*Are you ready for a career with us? We want to ensure you have all the tools and environment you need to unleash your potential.* *Need any specific accommodations?* *Whether you require specific accommodations or have a unique preference, let us know, and we'll do what we can to customise your interview process for comfort and maximum magic!* *Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.*

Where necessary, we sometimes use AI tools to help with parts of our hiring process, like reviewing applications or assessing responses. We’re lucky to receive a huge amount of interest, so these tools help our recruiters manage that volume, not replace them. Ultimately, every hiring decision (for example, whether to progress your application or not) is always made by a real person in our Talent team. If you’d like to know more about how we use your data, you can reach out to us via email at talent@octoenergy.com. We’re happy to help!

The market for this type of role

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