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About Dalkia UK
Jointly owned by EDF Energy and Dalkia, we are a leading UK technical services provider, delivering engineering, facilities management and energy solutions nationwide.
With 5,000+ employees and £600m+ turnover, we combine the strength of a major group with a people-first culture, innovation mindset and inclusive values making Dalkia a great place to grow your career.
Mechanical Design Engineer – Decarbonisation & Energy Infrastructure
Design the future. Deliver real carbon reduction. Engineer lasting impact.
Are you an experienced Mechanical Design Engineer looking to work on projects that genuinely make a difference?
We're looking for a talented engineer to join our growing design team, delivering innovative decarbonisation and energy infrastructure projects across complex, live operational environments. This is an opportunity to work on cutting-edge energy technologies while helping organisations achieve ambitious net-zero goals.
From large-scale energy centres and heat pumps to district heating, chilled water systems and smart building controls, you'll play a key role in developing high-quality engineering solutions that improve performance, resilience and sustainability.
If you're passionate about solving complex engineering challenges, collaborating with multidisciplinary teams and delivering projects that have a measurable environmental impact, we'd love to hear from you.
What You'll Be Working On
Our diverse portfolio includes major carbon reduction and infrastructure projects such as:
- Energy Centres
- Heat Pumps
- Combined Heat & Power (CHP)
- Boilers and Chillers
- Steam, HTHW, LTHW and Chilled Water Systems
- Domestic Water and Borehole Systems
- Advanced Pumping Systems
- HV/LV Electrical Infrastructure
- Standby Generation, UPS and Battery Storage
- Building Management Systems (BMS) and Smart Controls
The Role
As Mechanical Design Engineer, you'll take ownership of mechanical design development while managing and reviewing work produced by external design consultants through to RIBA Stage 4.
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Working on live operational sites, you'll ensure designs are technically robust, buildable and minimise disruption during construction and commissioning.
You'll collaborate closely with project managers, commercial teams, procurement specialists and operational stakeholders to deliver high-quality engineering solutions that balance performance, safety, cost and programme.
Key Responsibilities
- Develop mechanical designs from concept through detailed design.
- Produce and review engineering specifications and design documentation.
- Manage and coordinate external design consultants.
- Prepare scopes of work for external designers.
- Coordinate multidisciplinary designs to ensure complete, integrated solutions.
- Produce engineering schematics, concept layouts and technical reports.
- Ensure designs are suitable for installation within live operational environments.
- Identify and mitigate technical, programme and construction risks.
- Support project teams with design-related commercial and contractual matters.
- Participate in design reviews including HAZID, HAZOP and interdisciplinary coordination workshops.
- Keep abreast of industry standards, regulations and engineering best practice.
About You
You'll be a confident and technically capable engineer with experience delivering complex mechanical building services or infrastructure projects.
Essential
- Degree (BSc/BEng) in Mechanical Engineering.
- 5+ years' experience in mechanical design or related engineering.
- Strong understanding of the RIBA design process.
- Experience designing major plant including:
- Heat Pumps
- Boilers
- CHP
- Chillers
- Knowledge of supporting systems including:
- Steam
- HVAC
- LTHW/MTHW/HTHW
- Chilled Water
- Domestic Hot & Cold Water
- Pumps
- Pressure Vessels
- Air Handling Units
- Instrumentation & Controls
- Metering and Control Valves
- Ability to produce engineering schematics and 2D AutoCAD layouts.
- Understanding of 3D CAD modelling and engineering drawing production.
- Experience producing test plans, protocols and technical documentation.
- Strong stakeholder management and communication skills.
- Excellent organisational and IT skills.
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Desirable
- Experience within decarbonisation, Energy Performance Contracting (EPC), M&E or infrastructure projects.
- Leadership experience within engineering design.
- Project Controls experience.
- Knowledge of electrical, structural or civil engineering.
- Membership (or working towards) a recognised engineering institution.
- Experience with configuration management, document control and issue management.
- Experience leading HAZID, HAZOP or IDC workshops.
What Makes You Successful
You'll thrive in this role if you are:
- Passionate about sustainable engineering and carbon reduction.
- Proactive and solutions focused.
- Highly organised with excellent attention to detail.
- Comfortable working independently and within multidisciplinary teams.
- Confident communicating with colleagues, clients and senior stakeholders.
- Able to manage multiple priorities in a fast-paced project environment.
- Committed to continuous improvement and professional development.
- Someone who takes ownership and pride in delivering outstanding engineering solutions.
Our Values
- People First – health, safety and wellbeing come first
- Better Together – collaborative, respectful teamwork
- Trusted Partners – committed to our clients' success
- Taking Responsibility – making a positive difference
Equity, Diversity & Inclusion
We're committed to an inclusive and fair recruitment process. If you need any adjustments, let us know in confidence our team is here to support you.
Apply today and help shape tomorrow's energy infrastructure.
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