Building Service Design Engineer - Low-carbon Technologies
Location: London
Salary: Competitive
We are looking for a talented Building Service Design Engineer who thrives at the drawing board as much as they do leading a team.
The scope of the role covers the company’s full range of low-carbon technologies – heat pumps, photovoltaic (PV) solar systems, mechanical ventilation with heat recovery (MVHR), underfloor heating, and battery storage – across both domestic and commercial projects.
The role also involves regular client and stakeholder contact, so we need someone who is confident communicating technical concepts to non-technical audiences and comfortable in a client-facing environment.
Responsibilities
Design (primary Focus) :
* Act as the Lead Designer across the business, personally producing M&E technical drawings, schematics, and system layouts for heat pump, PV, MVHR, underfloor heating, and battery storage projects in both domestic and commercial settings.
* Specify equipment including heat pumps, circulation pumps, piping, inverters, battery units, ventilation units, and associated controls.
* Carry out power and control system design, including electrical schematics and wiring diagrams.
* Undertake 2D and 3D CAD modelling to support project design and client presentations.
* Carry out site surveys and feasibility assessments for new and existing projects.
* Review site installations to ensure conformance to design specifications and relevant standards.
Client And Stakeholder Engagement:
* Support the sales team on client calls and meetings, providing technical input to help scope and win new projects.
* Meet clients on site to discuss requirements, present design proposals, and address technical queries.
* Act as a technical point of contact for Architects, consultants, and other external stakeholders, answering design and specification questions.
Team Leadership And Management:
* Manage, mentor, and develop a small team of Mechanical and Electrical Design Engineers, allocating workload and providing day-to-day technical guidance.
* Set and maintain design standards, procedures, and quality benchmarks across the team.
* Evaluate and implement advances in design technologies and software to enhance the team's capabilities and efficiency.
* Collaborate with project management, sales, and installation teams to ensure designs are practical, cost-effective, and delivered on time.
* Support the growth of the design function as the business scales, including involvement in recruitment and onboarding of new Engineers.
Profile (Essential)
* Minimum HND Qualified Engineer (mechanical or electrical); degree-level qualification preferred.
* At least three years of hands-on M&E design experience within the building services or renewable energy industry.
* Proven experience designing systems involving one or more of heat pumps, PV solar, MVHR, underfloor heating, or battery storage.
* Strong proficiency in 2D and/or 3D CAD software (e.g. AutoCAD, Revit, or equivalent).
* Solid understanding of UK building regulations, Part L, and relevant standards (e.g. MCS, BS 7671).
* Comfortable operating as a working Designer while also managing a team – this is not a desk-only management role.
* Confident communicator, happy engaging with clients, Architects, and other stakeholders in both meetings and on site.
* Excellent attention to detail and a commitment to producing high-quality, accurate design work.
Profile (Desirable)
* People management or team leadership experience.
* Experience working across both domestic and commercial building services projects.
* Familiarity with BIM workflows and collaborative design environments.
* Membership of a relevant professional body (e.g. CIBSE, IET, or Engineering Council registration).
Benefits
* A leadership role in a purpose-driven company at the forefront of the UK's net-zero transition.
* The opportunity to shape and grow the design function within a fast-scaling business.
* Exposure to a diverse and expanding portfolio of renewable energy technologies.
* Competitive salary and benefits package