Senior Mechanical Building Services Design EngineerJ&T Business Consulting • Birmingham, England, United Kingdom
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Senior Mechanical Building Services Design Engineer
J&T Business Consulting
- Birmingham, England, United Kingdom
- Birmingham, England, United Kingdom
Über
Key Responsibilities
Lead delivery of geothermal and mechanical system designs across:
Feasibility and concept design (RIBA Stages 1–2)
Scheme design, FEED, and detailed design (RIBA Stages 3–4)
Delivery, commissioning, and operational support
Produce, review, and develop design documentation:
Feasibility studies, technical reports, and specifications
Concept designs, layouts, and system options
Detailed design documentation and calculations
Ground heat exchanger systems and geothermal layouts
Plantroom layouts (2D and 3D)
Thermal, hydraulic, and systems models
Size and select mechanical and low‑carbon equipment:\ Heat pumps, DACs, boilers, ACCs, CHPs, and ground loops
Pumps, valves, buffer vessels, DHW cylinders, PHEs, and ancillary equipment
Ground heat exchangers using industry‑recognised software (e.g. GLD, EED)
Carry out and review calculations:
Heat loss and heat gain calculations (IES / Excel)
Energy performance and operational data analysis
Engineering calculation spreadsheets
Act as the lead technical interface with clients and manage strong client relationships
Lead day‑to‑day project delivery within:
GED’s internal engineering team
The client’s engineers and external consultants
Review and understand client specifications, employer’s requirements and work instructions and identify potential non‑compliances, raising them proactively the client and developing mitigation strategies
Manage RFIs and technical clarifications, review, approve and issue external meeting minutes and technical notes
Support project management through internal budget control and variation orders where scope changes occur
Lead project handover activities
Lead mechanical design coordination at RIBA Stages 1–2 with architects, electrical, structural and BMS designers and support coordination at RIBA Stages 3–4, ensuring design intent is maintained
Ensure all designs are technically robust, coordinated across disciplines and fully compliant with relevant standards and guidance
Support and participate in external design reviews and independent technical validation
Attend and contribute to installation inspections, snagging, system troubleshooting, remedial strategy development, remote monitoring, seasonal commissioning and review of as‑built documentation
Mentor and support intermediate and junior engineers, review calculations, drawings and reports produced by junior team members, provide structured technical feedback and guidance
Contribute to the development of GED’s design standards, calculation tools, engineering workflows and best practices
Qualifications
BEng / MEng / MSc in Mechanical Engineering, Building Services Engineering or a related discipline
Extensive depth of professional experience in mechanical building services, geothermal or low‑carbon energy system design
Strong technical capability in geothermal and ground source heat pump systems, low‑carbon heating and cooling systems, building heat loss and heat gain calculations, HVAC system design and equipment sizing (heat transfer, pipework and ductwork sizing, systems hydraulics and thermodynamics)
Very good understanding of heat pump operation, Rankine cycles, mechanical components and control philosophy
Strong working knowledge of relevant standards and guidance, including CIBSE, BSRIA, GSHPA / IGSHPA, HWA and relevant BS and EN standards
AutoCAD, GLD / EED, Microsoft Office (Word, Excel, PowerPoint)
Strong technical writing and client presentation skills
Comfortable working in a small consultancy environment with high responsibility
Right to work and live in the UK
Chartered Engineer (CEng) or working towards chartership
Certified GeoExchange Designer (CGD) or working towards certification
Consultancy or client‑facing experience
Experience supporting projects through construction, commissioning and operation
Experience supervising or line‑managing engineers
10+ years experience in mechanical building services, geothermal or heating + cooling / low‑carbon energy system design
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Sprachkenntnisse
- English
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