Mechanical Engineer – Slough (GB)

last updated June 1, 2026 19:45 UTC

HQ: Hybrid

OFF: Slough (GB)
Full-Time
Full-Stack Programming

more jobs in this category:

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.

Apply info ->

To apply for this job, please visit the application page