Senior Mechanical Design Engineer

Equans is looking for a Senior Mechanical Design Engineer (Decarbonisation & Energy Solutions) to join our team in Manchester. This is a full-time role on offer is a competitive salary, and benefits package.

The Senior Mechanical Design Engineer is responsible for the delivery of high-quality mechanical designs and technical support across decarbonisation and sustainable retrofit projects. This includes the design and optimisation of HVAC systems, heat pumps, and building automation systems, supporting the full project lifecycle from early feasibility through to construction and commissioning.

What will you deliver?

Mechanical Design & Engineering

Strong technical grounding in mechanical building services design to integrate low-carbon energy solutions, such as heat pumps, heat recovery systems, high-efficiency HVAC, thermal storage, and demand-led controls for sustainable retrofit in commercial, public-sector, and mixed-use buildings.
Proven experience in heat pump design and integration, including hybrid systems and low-temperature heating solutions.
Ability to integrate mechanical systems with electrical infrastructure and low-carbon technologies for retrofit and new-build projects.
Sound understanding of electrical building services to enable effective coordination.
Competent in detailed design from RIBA Stage 2 to 5, including heating and cooling load calculations, ancillary equipment sizing and selection, ductwork and pipework sizing, schematics, schedules, DSEAR assessments, and technical reports.
Participating and contributing to HAZOP and LOPA discussions/ meetings.

Experience with heat networks and utilities, from feasibility through to applications and connection design.
Proficient in AutoCAD and good working knowledge of BIM workflows (Revit desirable).
Support energy modelling and system performance simulations using IES, Energy Pro, and other tools.
Ability to lead mechanical design packages on multi-disciplinary projects.
Ability to check, QA, and sign off mechanical designs in accordance with CIBSE Guides, BS EN standards, UK Building Regulations (Part L, Part F, Part G), and relevant industry codes.

Design Management & Team Development

Undertake design, coordination, and management, integrating mechanical and energy systems for seamless project execution.
Produce and develop technical reports, drawings, and specifications.
Comfortable leading client and contractor discussions, including technical presentations.
Experienced in Design & Build and Traditional procurement routes.
Able to mentor junior engineers and enhance team capability.
Strong organisational skills, able to manage multiple concurrent projects and deadlines.
Commercial awareness to support bids, scopes of work, and fee proposals.
Assist in identifying design risks and contribute to risk mitigation, manage the risk registers.

Project and Risk Support

Manage designs and support end-to-end project lifecycle delivery, helping to ensure projects are delivered on time and within budget.
Conduct design reviews, ensuring design solutions meet performance, safety, and regulatory standards.

What can we offer you?

On offer is a competitive salary, and benefit package, which includes;
25 days annual leave (+ public holidays)
Life Cover equivalent to 2 times annual salary
Employee discount shopping schemes on major brands and retailers
Gym membership discounts
Cycle to work scheme
Holiday purchase scheme
2 corporate social responsibility days per year
Broad range of learning opportunities, such as professional qualifications, collective/individual training, and personalized support programmes
Attractive Employee Referral Rewards Scheme
Access to our growing employee networks
24/7 Employee Assistance Program and access to mental wellbeing app

Who are you?

Experience:

Experience in design and design management, risk assessment, and project delivery of sustainable retrofit, low-carbon technologies, and energy efficiency projects.
Proficiency in design-, energy modelling- and simulation software such as IES, Energy Pro, PVsol, Termis, NEMO, and Netsim.
Experience working across full RIBA stages on multidisciplinary teams.
Experience in public sector or funding-driven decarbonisation projects such as PSDS and WH/ SHDF.

Qualifications:

Degree in Mechanical Engineering or Building Services Engineering (BEng or equivalent).
Chartered Engineer status (CEng) or working towards.
Strong experience in design management, risk assessment, and project delivery of sustainable retrofit, low-carbon technologies, and energy efficiency projects.
Experience working across full RIBA stages on multidisciplinary teams.
Experience in public sector or funding-driven decarbonisation projects such as PSDS and WH/ SHDF.
Strong background in mechanical building services design, supported by practical experience or equivalent knowledge.

Who are we?

In the UK & Ireland, Equans is a provider of sustainable facilities management and regeneration, and cutting-edge energy and digital services. Our 15,000 employees…