Find a job 
Featured Companies 
Featured Universities 
For Companies At a Glance
- Tasks: Lead innovative ASHP retrofit projects and shape the future of energy delivery.
- Company: Established energy and infrastructure business focused on decarbonisation.
- Benefits: Competitive salary, comprehensive benefits, and genuine long-term progression.
- Why this job: Make a real impact in the energy transition and work on exciting projects.
- Qualifications: Experience in mechanical engineering and air source heat pump design.
- Other info: Join a growing team with strong support for career development.
The predicted salary is between 50000 - 70000 £ per year.
Salary: £50K - £70K DOE
Location: Bristol hybrid, with local site visits and occasional UK travel
Why this role
You know that decarbonisation only works when good ideas become real, functioning systems. This is a chance to step into a senior mechanical engineering role where your designs will not sit on a shelf. They will shape live retrofit projects, cut carbon across public buildings, and help transform how heat is delivered in a major UK city.
This opportunity would suit a Mechanical Engineer or Building Services Engineer who has strong experience with air source heat pumps, particularly in retrofit environments, and who wants to play a visible part in the energy transition. You will join a growing engineering function with a strong pipeline of work, a practical culture, and the chance to influence how projects are designed, delivered and improved over time.
What you’ll do
You will lead technical work across a wide range of decarbonisation and clean energy projects, with a strong focus on ASHP retrofit schemes in existing buildings. That will include site surveys, energy audits, feasibility studies, outline and detailed design, contractor scope development, design review, technical reporting and client presentation.
This is a hands-on senior role. You will be trusted to develop engineering solutions yourself, while also overseeing specialist consultants and subcontractors where needed. The work will span heating system design, pipe sizing, control philosophy, P&IDs, layouts, techno-economic analysis, energy modelling and support through construction and commissioning. You will also help mentor junior engineers as the team continues to grow.
About the company
Our client is a well-established energy and infrastructure business delivering decarbonisation, energy efficiency and renewable solutions across the UK and Europe. They work with complex estates in the public and private sectors, helping customers reduce cost, improve resilience and move towards net zero.
What makes this role stand out is the scale of the opportunity. You will be joining at a point where there is a substantial pipeline of retrofit work ahead, particularly across Bristol-based buildings, with the backing to build stronger in-house technical capability over time.
About you
You will bring solid experience in mechanical engineering, building services or decarbonisation, with proven knowledge of air source heat pump design in retrofit applications. You should feel confident working across existing heating systems, reviewing constructability, challenging design assumptions and supporting projects beyond paper design into delivery.
Just as important is your mindset. You will be practical, collaborative and comfortable balancing technical detail with client-facing responsibility. Experience with public sector frameworks is helpful, but the priority is strong ASHP and retrofit expertise.
Rewards & growth
Alongside a competitive salary and comprehensive benefits package, this role offers genuine long-term progression. You will have the chance to shape projects from concept to commissioning, build leadership experience, and contribute to a growing team in one of the UK’s most important decarbonisation markets.
How to apply
If you are ready to take ownership of meaningful ASHP retrofit and building decarbonisation projects, we would love to hear from you.
Senior Mechanical Engineer - ASHP Design in Bath employer: Net Zero Evolution
Contact Detail:
Net Zero Evolution Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Mechanical Engineer - ASHP Design in Bath
✨Tip Number 1
Network like a pro! Get out there and connect with industry professionals, attend events, and join relevant online forums. The more people you know, the better your chances of hearing about job openings before they even hit the market.
✨Tip Number 2
Show off your skills in interviews! Prepare to discuss your experience with air source heat pumps and retrofit projects in detail. Use real examples to demonstrate how you've tackled challenges and delivered results in previous roles.
✨Tip Number 3
Don’t just apply for jobs; engage with the company! Follow them on social media, comment on their posts, and share relevant content. This shows your genuine interest and can help you stand out from the crowd.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re serious about joining our team and contributing to the energy transition.
We think you need these skills to ace Senior Mechanical Engineer - ASHP Design in Bath
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with air source heat pumps and retrofit projects. We want to see how your skills align with the role, so don’t be shy about showcasing relevant projects you've worked on!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about decarbonisation and how you can contribute to our team. Keep it engaging and personal – we love to see your personality come through.
Showcase Your Technical Skills: In your application, be sure to mention specific technical skills related to heating system design, energy modelling, and project delivery. We’re looking for someone who can hit the ground running, so let us know what you bring to the table!
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re keen and ready to take the next step in your career!
How to prepare for a job interview at Net Zero Evolution
✨Know Your ASHP Inside Out
Make sure you brush up on your knowledge of air source heat pumps, especially in retrofit environments. Be prepared to discuss specific projects you've worked on and how your designs have made a tangible impact. This will show your potential employer that you’re not just familiar with the theory but can apply it practically.
✨Showcase Your Problem-Solving Skills
During the interview, be ready to share examples of challenges you've faced in previous projects and how you overcame them. Highlight your ability to balance technical details with client needs, as this role requires a hands-on approach to problem-solving in real-world scenarios.
✨Demonstrate Leadership and Mentorship
Since this is a senior role, it's important to convey your experience in mentoring junior engineers. Share specific instances where you've guided others or led a team, as this will illustrate your capability to contribute to the growth of the engineering function.
✨Prepare Questions About the Company’s Vision
Research the company’s projects and their approach to decarbonisation. Prepare thoughtful questions about their future plans and how you can contribute to their mission. This shows your genuine interest in the role and aligns your goals with theirs.