Senior Mechanical Engineer

Centrica plc; Salford; Hybrid; GBP 52,000 - 76,000; Full time

Benefits offered by this job

Company car/ car allowance provided

Job summary

Centrica Business Solutions in Salford is seeking a Senior Mechanical Engineer to lead delivery of low-carbon building services, developing sustainable, zero-carbon mechanical designs and overseeing installation with clients.

You will design and integrate low-carbon technologies, produce documentation, and collaborate with multidisciplinary teams to deliver high-quality, safe, and compliant systems while advancing the UK's energy transition.

Qualifications

• Engineering Council–accredited honours degree (CIBSE, IET, or IMechE), or an HNC in a relevant discipline with a commitment to further professional development
• Working towards, or already achieved, IEng or CEng professional registration
• Experience across site surveys and inspections, solution development, building services design, client and design team meetings, snagging and commissioning of systems

Responsibilities

• Produce high‑quality mechanical engineering documentation, including specifications, schedules, and technical reports
• Carry out pipework sizing calculations for LTHW, CHW, HWS, CWS, steam, gas, flues, compressed air, and specialist systems
• Perform ductwork sizing calculations
• Size mechanical plant and equipment, including pumps, boilers, CHP units, heat pumps, chillers, etc.
• Undertake heat gain and heat loss calculations
• Develop heating and cooling load profiles
• Carry out thermal modelling and system performance analysis
• Produce BMS system descriptions and control strategies
• Participate in HAZOP and LOPA studies
• Conduct DSEAR assessments
• Complete PED calculations and prepare associated compliance documentation

Skills

Communication skills

Client-facing experience

Detail-oriented

Education

Engineering Council accredited honours degree

HNC with commitment to professional development

IEng or CEng registration

Job description

Join us, be part of more. We’re so much more than an energy company. We’re a family of brands revolutionising how we power the planet. We're energisers. One team of 21,000 colleagues that's energising a greener, fairer future by creating an energy system that doesn't rely on fossil fuels, whilst living our powerful commitment to igniting positive change in our communities. Here, you can find more purpose, more passion, and more potential. That’s why working here is #MoreThanACareer. We do energy differently - we do it all. We make it, store it, move it, sell it, and mend it.

About your team

At Centrica Business Solutions, we’re proud to partner with over 7,000 organisations globally – helping them to balance planet, with profit. We build, operate and maintain onsite, large-scale energy assets like Solar PV and Combined Heat and Power – to help businesses to save the planet and save money. We’re also transforming the UK’s energy landscape by partnering with landowners and developers to build a 900MW portfolio of new grid-scale solar farms and battery storage assets.

Senior Mechanical Engineer

Location: Salford | Hybrid working

Full-Time – Permanent

Company car/ car allowance provided

We work in a hybrid, Flexible First way—typically spending 1/2 days a week in our Salford office plus at least a day per week visiting clients in the UK or Ireland.

The Team

Centrica Business Solutions (CBS) designs, builds, operates, and maintains clean energy assets that enable customers to decarbonise their operations. Our end-to-end offering includes the supply of green energy, project delivery expertise, financing solutions, and industry-leading operational capabilities. Together, we help customers improve energy efficiency, reduce carbon emissions, and balance commercial performance with sustainability goals.

The Job

This is an exciting opportunity to play a leading role in the delivery of low‑carbon mechanical building services solutions. You will contribute to the development of sustainable, zero‑carbon, innovative, and high-quality mechanical designs, supporting our customers’ transition to cleaner energy systems. The successful candidate will be confident working directly with clients and possess a strong track record in the design and delivery of mechanical building services installations. You will be responsible for both the detailed design and the successful integration of low‑carbon technologies, as well as providing technical oversight during installation.

Key Responsibilities

• Produce high-quality mechanical engineering documentation, including specifications, schedules, and technical reports
• Carry out pipework sizing calculations for systems including LTHW, CHW, HWS, CWS, steam, gas, flues, compressed air, and specialist systems
• Perform ductwork sizing calculations
• Size mechanical plant and equipment, including pumps, plate heat exchangers, boilers, CHP units, heat pumps, thermal stores, buffer vessels, calorifiers, fans, AHUs, and chillers
• Undertake heat gain and heat loss calculations
• Develop heating and cooling load profiles
• Carry out thermal modelling and system performance analysis
• Produce BMS system descriptions and control strategies
• Participate in HAZOP and LOPA studies
• Conduct DSEAR assessments
• Complete PED calculations and prepare associated compliance documentation

The Person

You will be an experienced mechanical designer, currently working within building services design or a closely related discipline. You will hold a degree in Mechanical Engineering, Building Services Engineering, or a relevant equivalent qualification. You will be a confident and effective communicator, capable of working both independently and collaboratively within multidisciplinary teams. You will demonstrate a proactive and innovative mindset, with a continuous focus on improving design quality, safety, and delivery outcomes. A professional, safety‑first approach is essential, along with pride in delivering work to a high standard through to completion.

Qualifications & Experience

• An Engineering Council – accredited honours degree (CIBSE, IET, or IMechE), or an HNC in a relevant discipline with a commitment to further professional development
• Working towards, or already achieved, IEng or CEng professional registration
• A forward-thinking approach with a passion for design innovation
• Experience across a range of engineering activities, ideally including: Site surveys and inspectionsSolution developmentBuilding services designClient and design team meetingsSnagging and commissioning of systemsProblem diagnosis and solutioning

Personal Qualities

• Confident and professional when representing Centrica in client-facing environments
• Strong communication skills, with the ability to clearly explain complex engineering solutions
• High attention to detail and a commitment to delivering high-quality work
• Able to inspire confidence and build effective working relationships with colleagues and clients
• Comfortable working autonomously, using initiative to manage technical responsibilities with minimal supervision

Why should you apply?

We’re not a perfect place – but we’re a people place. Our priority is supporting all of the different realities our people face. Life is about so much more than work. We get it. That’s why we’ve designed our total rewards to give you the flexibility to choose what you need, when you need it, making sure that you and your family are supported not only financially, but physically and emotionally too.

We’re building a diverse, talented team where different perspectives spark better ideas.

Help us, help you. We would love for you to share any information about yourself throughout our recruitment process so that we can better understand you and help shape your journey.

We’re a family of brands revolutionising how we power the planet. When it comes to energy, no one does it like us. We make it, store it, move it, sell it and mend it. We’re made up of 12 different businesses, but united by our purpose as Centrica. We’re energisers. Our journey to a greener, fairer future is powered by individuals like you. Through innovative green products, intelligent energy solutions and developing smarter ways to use and save energy, we’re not just part of the energy transition, we’re leading it. Our commitment goes beyond sustainability. Together we’re bringing our collective energies to create positive change in our local communities. If you immerse yourself in our fight to change tomorrow, you might just find your why. We’re looking for people to add to our culture – not fit in with it. We're building a community where you can be unapologetically you, where differences are celebrated, and where everyone can belong. Real inclusivity also means supporting the different realities our people face. That’s why we have the UK’s best Carers Policy and are continually building our approach to flexibility and wellbeing. Of course, we love having fun too. We’re a people place after all.