Details:
- Salary: £50,000 - 70,000 - Annum
- Job Type: Permanent
- Job Status: Full-Time
- Salary Per: Annum
- Location: Bristol City of Bristol
- Date: 2 days ago
Description:
Job Title: Senior Mechanical Engineer - ASHP Design
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